CVE-2026-80229

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In OpenSSL 3 provider\nconfigurations, libcurl attaches an allocated library context to the easy\nhandle's state and passes it to OpenSSL without acquiring an ownership\nreference; destroying the easy handle prematurely frees this context while the\nactive connection retains a dangling pointer, leading to a heap-use-after-free\nupon subsequent I/O or post-handshake operations."}], "affected": [{"vendor": "curl", "product": "curl", "versions": [{"version": "8.14.0", "status": "affected", "versionType": "semver", "lessThan": "8.14.2"}, {"version": "8.15.0", "status": "affected", "versionType": "semver", "lessThan": "8.16.1"}, {"version": "8.17.0", "status": "affected", "versionType": "semver", "lessThan": "8.20.1"}, {"version": "8.21.0", "status": "affected", "versionType": "semver", "lessThan": "8.22.0"}], "defaultStatus": "unaffected"}, {"vendor": "curl", "product": "curl", "versions": [{"version": "f2ce6c46b9dcc46ced0ce43fa95176ea7599a854", "status": "affected", "versionType": "git", "lessThan": "7ea37abc6ac0120ba5f6d94be8d196f7cf1506bb"}], "defaultStatus": "unaffected", "repo": "https://github.com/curl/curl.git"}, {"vendor": "curl", "product": "curl", "versions": [{"version": "8.21.0", "status": "affected"}, {"version": "8.20.0", "status": "affected"}, {"version": "8.19.0", "status": "affected"}, {"version": "8.18.0", "status": "affected"}, {"version": "8.17.0", "status": "affected"}, {"version": "8.16.0", "status": "affected"}, {"version": "8.15.0", "status": "affected"}, {"version": "8.14.1", "status": "affected"}, {"version": "8.14.0", "status": "affected"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://curl.se/docs/CVE-2026-80229.json"}, {"url": "https://curl.se/docs/CVE-2026-80229.html"}, {"url": "https://hackerone.com/reports/3969255"}], "x_osv": {"schema_version": "1.5.0", "id": "CURL-CVE-2026-80229", "aliases": ["CVE-2026-80229"], "summary": "OpenSSL provider use-after-free", "modified": "2026-09-07T10:34:51.00Z", "database_specific": {"package": "curl", "affects": "both", "URL": "https://curl.se/docs/CVE-2026-80229.json", "www": "https://curl.se/docs/CVE-2026-80229.html", "issue": "https://hackerone.com/reports/3969255", "CWE": {"id": "CWE-416", "desc": "Use After Free"}, "last_affected": "8.21.0", "severity": "Low"}, "published": "2026-09-02T08:00:00.00Z", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "8.14.0"}, {"fixed": "8.14.2"}, {"introduced": "8.15.0"}, {"fixed": "8.16.1"}, {"introduced": "8.17.0"}, {"fixed": "8.20.1"}, {"introduced": "8.21.0"}, {"fixed": "8.22.0"}]}, {"type": "GIT", "repo": "https://github.com/curl/curl.git", "events": [{"introduced": "f2ce6c46b9dcc46ced0ce43fa95176ea7599a854"}, {"fixed": "7ea37abc6ac0120ba5f6d94be8d196f7cf1506bb"}]}], "versions": ["8.21.0", "8.20.0", "8.19.0", "8.18.0", "8.17.0", "8.16.0", "8.15.0", "8.14.1", "8.14.0"]}], "credits": [{"name": "Stanislav Fort (Aisle Research)", "type": "finder"}, {"name": "Daniel Stenberg", "type": "remediation developer"}], "details": "When performing transfers via libcurl\u2019s multi interface, pooled TLS\nconnections can outlive their originating easy handles. In OpenSSL 3 provider\nconfigurations, libcurl attaches an allocated library context to the easy\nhandle's state and passes it to OpenSSL without acquiring an ownership\nreference; destroying the easy handle prematurely frees this context while the\nactive connection retains a dangling pointer, leading to a heap-use-after-free\nupon subsequent I/O or post-handshake operations."}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "Use After Free", "cweId": "CWE-416", "type": "CWE"}]}], "credits": [{"lang": "en", "value": "Stanislav Fort (Aisle Research)", "type": "finder"}, {"lang": "en", "value": "Daniel Stenberg", "type": "remediation developer"}], "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-416", "lang": "en", "description": "CWE-416 Use After Free"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-09-08T15:43:30.858480Z", "id": "CVE-2026-80229", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-08T15:43:53.519Z"}}]}}

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In OpenSSL 3 provider\nconfigurations, libcurl attaches an allocated library context to the easy\nhandle's state and passes it to OpenSSL without acquiring an ownership\nreference; destroying the easy handle prematurely frees this context while the\nactive connection retains a dangling pointer, leading to a heap-use-after-free\nupon subsequent I/O or post-handshake operations.", "summary": "OpenSSL provider use-after-free", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "8.14.0"}, {"fixed": "8.14.2"}, {"introduced": "8.15.0"}, {"fixed": "8.16.1"}, {"introduced": "8.17.0"}, {"fixed": "8.20.1"}, {"introduced": "8.21.0"}, {"fixed": "8.22.0"}]}, {"repo": "https://github.com/curl/curl.git", "type": "GIT", "events": [{"introduced": "f2ce6c46b9dcc46ced0ce43fa95176ea7599a854"}, {"fixed": "7ea37abc6ac0120ba5f6d94be8d196f7cf1506bb"}]}], "versions": ["8.21.0", "8.20.0", "8.19.0", "8.18.0", "8.17.0", "8.16.0", "8.15.0", "8.14.1", "8.14.0"]}], "modified": "2026-09-07T10:34:51.00Z", "published": "2026-09-02T08:00:00.00Z", "schema_version": "1.5.0", "database_specific": {"CWE": {"id": "CWE-416", "desc": "Use After Free"}, "URL": "https://curl.se/docs/CVE-2026-80229.json", "www": "https://curl.se/docs/CVE-2026-80229.html", "issue": "https://hackerone.com/reports/3969255", "affects": "both", "package": "curl", "severity": "Low", "last_affected": "8.21.0"}}, "credits": [{"lang": "en", "type": "finder", "value": "Stanislav Fort (Aisle Research)"}, {"lang": "en", "type": "remediation developer", "value": "Daniel Stenberg"}], "affected": [{"vendor": "curl", "product": "curl", "versions": [{"status": "affected", "version": "8.14.0", "lessThan": "8.14.2", "versionType": "semver"}, {"status": "affected", "version": "8.15.0", "lessThan": "8.16.1", "versionType": "semver"}, {"status": "affected", "version": "8.17.0", "lessThan": "8.20.1", "versionType": "semver"}, {"status": "affected", "version": "8.21.0", "lessThan": "8.22.0", "versionType": "semver"}], "defaultStatus": "unaffected"}, {"repo": "https://github.com/curl/curl.git", "vendor": "curl", "product": "curl", "versions": [{"status": "affected", "version": "f2ce6c46b9dcc46ced0ce43fa95176ea7599a854", "lessThan": "7ea37abc6ac0120ba5f6d94be8d196f7cf1506bb", "versionType": "git"}], "defaultStatus": "unaffected"}, {"vendor": "curl", "product": "curl", "versions": [{"status": "affected", "version": "8.21.0"}, {"status": "affected", "version": "8.20.0"}, {"status": "affected", "version": "8.19.0"}, {"status": "affected", "version": "8.18.0"}, {"status": "affected", "version": "8.17.0"}, {"status": "affected", "version": "8.16.0"}, {"status": "affected", "version": "8.15.0"}, {"status": "affected", "version": "8.14.1"}, {"status": "affected", "version": "8.14.0"}], "defaultStatus": "unaffected"}], "references": [{"url": "https://curl.se/docs/CVE-2026-80229.json"}, {"url": "https://curl.se/docs/CVE-2026-80229.html"}, {"url": "https://hackerone.com/reports/3969255"}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "When performing transfers via libcurl\u2019s multi interface, pooled TLS\nconnections can outlive their originating easy handles. In OpenSSL 3 provider\nconfigurations, libcurl attaches an allocated library context to the easy\nhandle's state and passes it to OpenSSL without acquiring an ownership\nreference; destroying the easy handle prematurely frees this context while the\nactive connection retains a dangling pointer, leading to a heap-use-after-free\nupon subsequent I/O or post-handshake operations."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-416", "description": "Use After Free"}]}], "providerMetadata": {"orgId": "2499f714-1537-4658-8207-48ae4bb9eae9", "shortName": "curl", "dateUpdated": "2026-09-15T06:03:08.881Z"}}}, "cveMetadata": {"cveId": "CVE-2026-80229", "state": "PUBLISHED", "dateUpdated": "2026-09-15T06:03:08.881Z", "dateReserved": "2026-08-26T04:24:23.168Z", "assignerOrgId": "2499f714-1537-4658-8207-48ae4bb9eae9", "datePublished": "2026-09-06T17:47:59.510Z", "assignerShortName": "curl"}, "dataVersion": "5.2"}

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{}

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