CVE-2020-26116

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2020-26116", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-10-14T09:35:28.657Z", "dateReserved": "2020-09-27T00:00:00.000Z", "datePublished": "2020-09-27T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2023-05-24T00:00:00.000Z"}, "descriptions": [{"lang": "en", "value": "http.client in Python 3.x before 3.5.10, 3.6.x before 3.6.12, 3.7.x before 3.7.9, and 3.8.x before 3.8.5 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of HTTPConnection.request."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://python-security.readthedocs.io/vuln/http-header-injection-method.html"}, {"url": "https://bugs.python.org/issue39603"}, {"name": "FEDORA-2020-221823ebdd", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BW4GCLQISJCOEGQNIMVUZDQMIY6RR6CC/"}, {"name": "FEDORA-2020-887d3fa26f", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWMAVY4T4257AZHTF2RZJKNJNSJFY24O/"}, {"name": "FEDORA-2020-d30881c970", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OXI72HIHMXCQFWTULUXDG7VDA2BCYL4Y/"}, {"name": "USN-4581-1", "tags": ["vendor-advisory"], "url": "https://usn.ubuntu.com/4581-1/"}, {"name": "FEDORA-2020-e33acdea18", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HDQ2THWU4GPV4Y5H5WW5PFMSWXL2CRFD/"}, {"name": "openSUSE-SU-2020:1859", "tags": ["vendor-advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00027.html"}, {"name": "FEDORA-2020-d42cb01973", "tags": ["vendor-advisory"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOX7DGMMWWL6POCRYGAUCISOLR2IG3XV/"}, {"name": "[debian-lts-announce] 20201119 [SECURITY] [DLA 2456-1] python3.5 security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00032.html"}, {"name": "GLSA-202101-18", "tags": ["vendor-advisory"], "url": "https://security.gentoo.org/glsa/202101-18"}, {"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"}, {"url": "https://security.netapp.com/advisory/ntap-20201023-0001/"}, {"name": "[debian-lts-announce] 20230524 [SECURITY] [DLA 3432-1] python2.7 security update", "tags": ["mailing-list"], "url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T15:49:07.209Z"}, "title": "CVE Program Container", "references": [{"url": "https://python-security.readthedocs.io/vuln/http-header-injection-method.html", "tags": ["x_transferred"]}, {"url": "https://bugs.python.org/issue39603", "tags": ["x_transferred"]}, {"name": "FEDORA-2020-221823ebdd", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BW4GCLQISJCOEGQNIMVUZDQMIY6RR6CC/"}, {"name": "FEDORA-2020-887d3fa26f", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWMAVY4T4257AZHTF2RZJKNJNSJFY24O/"}, {"name": "FEDORA-2020-d30881c970", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OXI72HIHMXCQFWTULUXDG7VDA2BCYL4Y/"}, {"name": "USN-4581-1", "tags": ["vendor-advisory", "x_transferred"], "url": "https://usn.ubuntu.com/4581-1/"}, {"name": "FEDORA-2020-e33acdea18", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HDQ2THWU4GPV4Y5H5WW5PFMSWXL2CRFD/"}, {"name": "openSUSE-SU-2020:1859", "tags": ["vendor-advisory", "x_transferred"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00027.html"}, {"name": "FEDORA-2020-d42cb01973", "tags": ["vendor-advisory", "x_transferred"], "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOX7DGMMWWL6POCRYGAUCISOLR2IG3XV/"}, {"name": "[debian-lts-announce] 20201119 [SECURITY] [DLA 2456-1] python3.5 security update", "tags": ["mailing-list", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00032.html"}, {"name": "GLSA-202101-18", "tags": ["vendor-advisory", "x_transferred"], "url": "https://security.gentoo.org/glsa/202101-18"}, {"url": "https://www.oracle.com/security-alerts/cpuoct2021.html", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20201023-0001/", "tags": ["x_transferred"]}, {"name": "[debian-lts-announce] 20230524 [SECURITY] [DLA 3432-1] python2.7 security update", "tags": ["mailing-list", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html"}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2020-26116", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-08T21:01:39.793818Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-08T21:03:30.870Z"}}, {"x_adpType": "supplier", "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-10-14T09:35:28.657Z"}, "affected": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom"}], "defaultStatus": "unknown"}], "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://python-security.readthedocs.io/vuln/http-header-injection-method.html", "tags": ["x_transferred"]}, {"url": "https://bugs.python.org/issue39603", "tags": ["x_transferred"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BW4GCLQISJCOEGQNIMVUZDQMIY6RR6CC/", "name": "FEDORA-2020-221823ebdd", "tags": ["vendor-advisory", "x_transferred"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWMAVY4T4257AZHTF2RZJKNJNSJFY24O/", "name": "FEDORA-2020-887d3fa26f", "tags": ["vendor-advisory", "x_transferred"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OXI72HIHMXCQFWTULUXDG7VDA2BCYL4Y/", "name": "FEDORA-2020-d30881c970", "tags": ["vendor-advisory", "x_transferred"]}, {"url": "https://usn.ubuntu.com/4581-1/", "name": "USN-4581-1", "tags": ["vendor-advisory", "x_transferred"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HDQ2THWU4GPV4Y5H5WW5PFMSWXL2CRFD/", "name": "FEDORA-2020-e33acdea18", "tags": ["vendor-advisory", "x_transferred"]}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00027.html", "name": "openSUSE-SU-2020:1859", "tags": ["vendor-advisory", "x_transferred"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOX7DGMMWWL6POCRYGAUCISOLR2IG3XV/", "name": "FEDORA-2020-d42cb01973", "tags": ["vendor-advisory", "x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00032.html", "name": "[debian-lts-announce] 20201119 [SECURITY] [DLA 2456-1] python3.5 security update", "tags": ["mailing-list", "x_transferred"]}, {"url": "https://security.gentoo.org/glsa/202101-18", "name": "GLSA-202101-18", "tags": ["vendor-advisory", "x_transferred"]}, {"url": "https://www.oracle.com/security-alerts/cpuoct2021.html", "tags": ["x_transferred"]}, {"url": "https://security.netapp.com/advisory/ntap-20201023-0001/", "tags": ["x_transferred"]}, {"url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html", "name": "[debian-lts-announce] 20230524 [SECURITY] [DLA 3432-1] python2.7 security update", "tags": ["mailing-list", "x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T15:49:07.209Z"}}, {"affected": [{"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom"}], "defaultStatus": "unknown"}, {"vendor": "Siemens", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP", "versions": [{"status": "affected", "version": "V3.1.0", "lessThan": "V3.1.5", "versionType": "custom"}], "defaultStatus": "unknown"}], "x_adpType": "supplier", "references": [{"url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}], "providerMetadata": {"orgId": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "shortName": "siemens-SADP", "dateUpdated": "2026-10-14T09:35:28.657Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2020-26116", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-08T21:01:39.793818Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-08T21:01:40.586Z"}}], "cna": {"affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "references": [{"url": "https://python-security.readthedocs.io/vuln/http-header-injection-method.html"}, {"url": "https://bugs.python.org/issue39603"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BW4GCLQISJCOEGQNIMVUZDQMIY6RR6CC/", "name": "FEDORA-2020-221823ebdd", "tags": ["vendor-advisory"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWMAVY4T4257AZHTF2RZJKNJNSJFY24O/", "name": "FEDORA-2020-887d3fa26f", "tags": ["vendor-advisory"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OXI72HIHMXCQFWTULUXDG7VDA2BCYL4Y/", "name": "FEDORA-2020-d30881c970", "tags": ["vendor-advisory"]}, {"url": "https://usn.ubuntu.com/4581-1/", "name": "USN-4581-1", "tags": ["vendor-advisory"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HDQ2THWU4GPV4Y5H5WW5PFMSWXL2CRFD/", "name": "FEDORA-2020-e33acdea18", "tags": ["vendor-advisory"]}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00027.html", "name": "openSUSE-SU-2020:1859", "tags": ["vendor-advisory"]}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOX7DGMMWWL6POCRYGAUCISOLR2IG3XV/", "name": "FEDORA-2020-d42cb01973", "tags": ["vendor-advisory"]}, {"url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00032.html", "name": "[debian-lts-announce] 20201119 [SECURITY] [DLA 2456-1] python3.5 security update", "tags": ["mailing-list"]}, {"url": "https://security.gentoo.org/glsa/202101-18", "name": "GLSA-202101-18", "tags": ["vendor-advisory"]}, {"url": "https://www.oracle.com/security-alerts/cpuoct2021.html"}, {"url": "https://security.netapp.com/advisory/ntap-20201023-0001/"}, {"url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html", "name": "[debian-lts-announce] 20230524 [SECURITY] [DLA 3432-1] python2.7 security update", "tags": ["mailing-list"]}], "descriptions": [{"lang": "en", "value": "http.client in Python 3.x before 3.5.10, 3.6.x before 3.6.12, 3.7.x before 3.7.9, and 3.8.x before 3.8.5 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of HTTPConnection.request."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "text", "description": "n/a"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2023-05-24T00:00:00.000Z"}}}, "cveMetadata": {"cveId": "CVE-2020-26116", "state": "PUBLISHED", "dateUpdated": "2026-10-14T09:35:28.657Z", "dateReserved": "2020-09-27T00:00:00.000Z", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "datePublished": "2020-09-27T00:00:00.000Z", "assignerShortName": "mitre"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}, {"affectedData": [{"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "vendor": "Siemens", "versions": [{"lessThan": "V3.1.5", "status": "affected", "version": "V3.1.0", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP", "vendor": "Siemens", "versions": [{"lessThan": "V3.1.5", "status": "affected", "version": "V3.1.0", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "vendor": "Siemens", "versions": [{"lessThan": "V3.1.5", "status": "affected", "version": "V3.1.0", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP", "vendor": "Siemens", "versions": [{"lessThan": "V3.1.5", "status": "affected", "version": "V3.1.0", "versionType": "custom"}]}, {"defaultStatus": "unknown", "product": "SIPLUS S7-1500 CPU 1518-4 PN/DP MFP", "vendor": "Siemens", "versions": [{"lessThan": "V3.1.5", "status": "affected", "version": "V3.1.0", "versionType": "custom"}]}], "source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*", "matchCriteriaId": "0DCA021D-A322-4442-A030-B723D8F8C7E5", "versionEndExcluding": "3.5.10", "versionStartIncluding": "3.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*", "matchCriteriaId": "7EB6A6FC-6C82-4543-8DAA-96FF2BACDB5C", "versionEndExcluding": "3.6.12", "versionStartIncluding": "3.6.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*", "matchCriteriaId": "045171F0-A76D-4385-B2AE-51479B425C45", "versionEndExcluding": "3.7.9", "versionStartIncluding": "3.7.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*", "matchCriteriaId": "9065C407-4FE5-4895-84FC-21B706581C0F", "versionEndExcluding": "3.8.5", "versionStartIncluding": "3.8.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*", "matchCriteriaId": "80F0FA5D-8D3B-4C0E-81E2-87998286AF33", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*", "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956", "vulnerable": true}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:-:*:*:*", "matchCriteriaId": "CB66DB75-2B16-4EBF-9B93-CE49D8086E41", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*", "matchCriteriaId": "815D70A8-47D3-459C-A32C-9FEACA0659D1", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*", "matchCriteriaId": "7A5301BF-1402-4BE0-A0F8-69FBE79BC6D6", "vulnerable": true}, {"criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*", "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:netapp:solidfire:-:*:*:*:*:*:*:*", "matchCriteriaId": "A6E9EF0C-AFA8-4F7B-9FDC-1E0F7C26E737", "vulnerable": true}, {"criteria": "cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*", "matchCriteriaId": "AD7447BC-F315-4298-A822-549942FC118B", "vulnerable": false}, {"criteria": "cpe:2.3:h:netapp:hci_storage_node:-:*:*:*:*:*:*:*", "matchCriteriaId": "02DEB4FB-A21D-4CB1-B522-EEE5093E8521", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*", "matchCriteriaId": "D3E503FB-6279-4D4A-91D8-E237ECF9D2B0", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*", "matchCriteriaId": "B620311B-34A3-48A6-82DF-6F078D7A4493", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "http.client in Python 3.x before 3.5.10, 3.6.x before 3.6.12, 3.7.x before 3.7.9, and 3.8.x before 3.8.5 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of HTTPConnection.request."}, {"lang": "es", "value": "http.client en Python 3.x antes de la versi\u00f3n 3.5.10, 3.6.x antes de la versi\u00f3n 3.6.12, 3.7.x antes de la versi\u00f3n 3.7.9, y 3.8.x antes de la versi\u00f3n 3.8.5 permite la inyecci\u00f3n de CRLF si el atacante controla el m\u00e9todo de petici\u00f3n HTTP, como se demuestra insertando caracteres de control CR y LF en el primer argumento de HTTPConnection.request"}], "id": "CVE-2020-26116", "lastModified": "2026-10-14T10:17:33.537", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 6.4, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2020-26116", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-08T21:01:39.793818Z", "version": "2.0.3"}}]}, "published": "2020-09-27T04:15:11.587", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00027.html"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://bugs.python.org/issue39603"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00032.html"}, {"source": "cve@mitre.org", "url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BW4GCLQISJCOEGQNIMVUZDQMIY6RR6CC/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HDQ2THWU4GPV4Y5H5WW5PFMSWXL2CRFD/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWMAVY4T4257AZHTF2RZJKNJNSJFY24O/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OXI72HIHMXCQFWTULUXDG7VDA2BCYL4Y/"}, {"source": "cve@mitre.org", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOX7DGMMWWL6POCRYGAUCISOLR2IG3XV/"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://python-security.readthedocs.io/vuln/http-header-injection-method.html"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202101-18"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20201023-0001/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4581-1/"}, {"source": "cve@mitre.org", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00027.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://bugs.python.org/issue39603"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00032.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BW4GCLQISJCOEGQNIMVUZDQMIY6RR6CC/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HDQ2THWU4GPV4Y5H5WW5PFMSWXL2CRFD/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWMAVY4T4257AZHTF2RZJKNJNSJFY24O/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OXI72HIHMXCQFWTULUXDG7VDA2BCYL4Y/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QOX7DGMMWWL6POCRYGAUCISOLR2IG3XV/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://python-security.readthedocs.io/vuln/http-header-injection-method.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.gentoo.org/glsa/202101-18"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security.netapp.com/advisory/ntap-20201023-0001/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://usn.ubuntu.com/4581-1/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-398330.html"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-74"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"affected_release": [{"advisory": "RHSA-2022:5235", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "python-0:2.7.5-92.el7_9", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2022-06-28T00:00:00Z"}, {"advisory": "RHSA-2021:1633", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "python3-0:3.6.8-37.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1761", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "python27:2.7-8040020210122160212.cdb2db54", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1879", "cpe": "cpe:/a:redhat:enterprise_linux:8", "package": "python38:3.8-8040020210128125034.b1b639b6", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:1633", "cpe": "cpe:/o:redhat:enterprise_linux:8", "package": "python3-0:3.6.8-37.el8", "product_name": "Red Hat Enterprise Linux 8", "release_date": "2021-05-18T00:00:00Z"}, {"advisory": "RHSA-2021:3366", "cpe": "cpe:/a:redhat:rhel_eus:8.2", "package": "python3-0:3.6.8-24.el8_2", "product_name": "Red Hat Enterprise Linux 8.2 Extended Update Support", "release_date": "2021-08-31T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el6", "package": "rh-python36-python-0:3.6.12-1.el6", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 6", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el6", "package": "rh-python36-python-pip-0:9.0.1-5.el6", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 6", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el6", "package": "rh-python36-python-virtualenv-0:15.1.0-3.el6", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 6", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4273", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "python27-python-0:2.7.18-2.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4273", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "python27-python-pip-0:8.1.2-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4273", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "python27-python-virtualenv-0:13.1.0-4.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python36-python-0:3.6.12-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python36-python-pip-0:9.0.1-5.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python36-python-virtualenv-0:15.1.0-3.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4299", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python38-python-0:3.8.6-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4299", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python38-python-psutil-0:5.6.4-5.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4299", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python38-python-urllib3-0:1.25.7-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4273", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "python27-python-0:2.7.18-2.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4273", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "python27-python-pip-0:8.1.2-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4273", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "python27-python-virtualenv-0:13.1.0-4.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python36-python-0:3.6.12-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python36-python-pip-0:9.0.1-5.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python36-python-virtualenv-0:15.1.0-3.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4299", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python38-python-0:3.8.6-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4299", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python38-python-psutil-0:5.6.4-5.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4299", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python38-python-urllib3-0:1.25.7-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.6 EUS", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4273", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "python27-python-0:2.7.18-2.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4273", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "python27-python-pip-0:8.1.2-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4273", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "python27-python-virtualenv-0:13.1.0-4.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python36-python-0:3.6.12-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python36-python-pip-0:9.0.1-5.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4285", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python36-python-virtualenv-0:15.1.0-3.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-10-19T00:00:00Z"}, {"advisory": "RHSA-2020:4299", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python38-python-0:3.8.6-1.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4299", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python38-python-psutil-0:5.6.4-5.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-10-20T00:00:00Z"}, {"advisory": "RHSA-2020:4299", "cpe": "cpe:/a:redhat:rhel_software_collections:3::el7", "package": "rh-python38-python-urllib3-0:1.25.7-6.el7", "product_name": "Red Hat Software Collections for Red Hat Enterprise Linux 7.7 EUS", "release_date": "2020-10-20T00:00:00Z"}], "bugzilla": {"description": "python: CRLF injection via HTTP request method in httplib/http.client", "id": "1883014", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1883014"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "status": "verified"}, "cwe": "CWE-113", "details": ["http.client in Python 3.x before 3.5.10, 3.6.x before 3.6.12, 3.7.x before 3.7.9, and 3.8.x before 3.8.5 allows CRLF injection if the attacker controls the HTTP request method, as demonstrated by inserting CR and LF control characters in the first argument of HTTPConnection.request.", "A flaw was found in Python. The built-in modules httplib and http.client (included in Python 2 and Python 3, respectively) do not properly validate CRLF sequences in the HTTP request method, potentially allowing manipulation to the request by injecting additional HTTP headers. The highest threat from this vulnerability is to confidentiality and integrity."], "name": "CVE-2020-26116", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Out of support scope", "package_name": "python", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "python", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Will not fix", "package_name": "python3", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "python36:3.6/python36", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:quay:3", "fix_state": "Affected", "package_name": "quay", "product_name": "Red Hat Quay 3"}], "public_date": "2020-02-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2020-26116\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-26116\nhttps://python-security.readthedocs.io/vuln/http-header-injection-method.html"], "statement": "Versions of python36:3.6/python36 as shipped with Red Hat Enterprise Linux 8 are marked as 'Not affected' as they just provide \"symlinks\" to the main python3 component, which provides the actual interpreter of the Python programming language.", "threat_severity": "Moderate"}

{}