CVE-2023-3909

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-3909", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "state": "PUBLISHED", "assignerShortName": "GitLab", "dateReserved": "2023-07-25T10:30:28.870Z", "datePublished": "2023-11-06T12:08:45.129Z", "dateUpdated": "2025-11-20T04:08:28.265Z"}, "containers": {"cna": {"title": "Inefficient Regular Expression Complexity in GitLab", "descriptions": [{"lang": "en", "value": "An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.3 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. A Regular Expression Denial of Service was possible by adding a large string in timeout input in gitlab-ci.yml file."}], "affected": [{"vendor": "GitLab", "product": "GitLab", "repo": "git://git@gitlab.com:gitlab-org/gitlab.git", "cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "versions": [{"version": "12.3", "status": "affected", "lessThan": "16.3.6", "versionType": "semver"}, {"version": "16.4", "status": "affected", "lessThan": "16.4.2", "versionType": "semver"}, {"version": "16.5", "status": "affected", "lessThan": "16.5.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-1333: Inefficient Regular Expression Complexity", "cweId": "CWE-1333", "type": "CWE"}]}], "references": [{"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/418763", "name": "GitLab Issue #418763", "tags": ["issue-tracking", "permissions-required"]}, {"url": "https://hackerone.com/reports/2050269", "name": "HackerOne Bug Bounty Report #2050269", "tags": ["technical-description", "exploit", "permissions-required"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM"}}], "solutions": [{"lang": "en", "value": "Upgrade to version 16.5.1, 16.4.2, 16.3.6"}], "credits": [{"lang": "en", "value": "Thanks [akadrian](https://hackerone.com/akadrian) for reporting this vulnerability through our HackerOne bug bounty program", "type": "finder"}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2025-11-20T04:08:28.265Z"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2024-07-24T13:29:29.851628Z", "id": "CVE-2023-3909", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"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": "2025-06-12T14:24:38.009Z"}}, {"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T07:08:50.675Z"}, "title": "CVE Program Container", "references": [{"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/418763", "name": "GitLab Issue #418763", "tags": ["issue-tracking", "permissions-required", "x_transferred"]}, {"url": "https://hackerone.com/reports/2050269", "name": "HackerOne Bug Bounty Report #2050269", "tags": ["technical-description", "exploit", "x_transferred"]}]}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/418763", "name": "GitLab Issue #418763", "tags": ["issue-tracking", "permissions-required", "x_transferred"]}, {"url": "https://hackerone.com/reports/2050269", "name": "HackerOne Bug Bounty Report #2050269", "tags": ["technical-description", "exploit", "x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T07:08:50.675Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-3909", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2024-07-24T13:29:29.851628Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2024-07-24T13:29:34.631Z"}}], "cna": {"title": "Inefficient Regular Expression Complexity in GitLab", "credits": [{"lang": "en", "type": "finder", "value": "Thanks [akadrian](https://hackerone.com/akadrian) for reporting this vulnerability through our HackerOne bug bounty program"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "repo": "git://git@gitlab.com:gitlab-org/gitlab.git", "vendor": "GitLab", "product": "GitLab", "versions": [{"status": "affected", "version": "12.3", "lessThan": "16.3.6", "versionType": "semver"}, {"status": "affected", "version": "16.4", "lessThan": "16.4.2", "versionType": "semver"}, {"status": "affected", "version": "16.5", "lessThan": "16.5.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "Upgrade to version 16.5.1, 16.4.2, 16.3.6"}], "references": [{"url": "https://gitlab.com/gitlab-org/gitlab/-/issues/418763", "name": "GitLab Issue #418763", "tags": ["issue-tracking", "permissions-required"]}, {"url": "https://hackerone.com/reports/2050269", "name": "HackerOne Bug Bounty Report #2050269", "tags": ["technical-description", "exploit", "permissions-required"]}], "descriptions": [{"lang": "en", "value": "An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.3 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. A Regular Expression Denial of Service was possible by adding a large string in timeout input in gitlab-ci.yml file."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-1333", "description": "CWE-1333: Inefficient Regular Expression Complexity"}]}], "providerMetadata": {"orgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "shortName": "GitLab", "dateUpdated": "2025-11-20T04:08:28.265Z"}}}, "cveMetadata": {"cveId": "CVE-2023-3909", "state": "PUBLISHED", "dateUpdated": "2025-11-20T04:08:28.265Z", "dateReserved": "2023-07-25T10:30:28.870Z", "assignerOrgId": "ceab7361-8a18-47b1-92ba-4d7d25f6715a", "datePublished": "2023-11-06T12:08:45.129Z", "assignerShortName": "GitLab"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*"], "defaultStatus": "unaffected", "product": "GitLab", "repo": "git://git@gitlab.com:gitlab-org/gitlab.git", "vendor": "GitLab", "versions": [{"lessThan": "16.3.6", "status": "affected", "version": "12.3", "versionType": "semver"}, {"lessThan": "16.4.2", "status": "affected", "version": "16.4", "versionType": "semver"}, {"lessThan": "16.5.1", "status": "affected", "version": "16.5", "versionType": "semver"}]}], "source": "cve@gitlab.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "matchCriteriaId": "C306683A-74F6-435B-B374-5277E0F471A7", "versionEndExcluding": "16.3.6", "versionStartIncluding": "12.3.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "1F14AD03-5C49-4D52-85C6-E726A3909152", "versionEndExcluding": "16.3.6", "versionStartIncluding": "12.3.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*", "matchCriteriaId": "92775555-546E-4760-BD66-94E15B33DC8A", "versionEndExcluding": "16.4.2", "versionStartIncluding": "16.4.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "F67E4E44-65EA-494F-B1FA-D080F53329AD", "versionEndExcluding": "16.4.2", "versionStartIncluding": "16.4.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:gitlab:gitlab:16.5.0:*:*:*:community:*:*:*", "matchCriteriaId": "28AC2266-BC77-48CA-82CC-00E1D3825AD9", "vulnerable": true}, {"criteria": "cpe:2.3:a:gitlab:gitlab:16.5.0:*:*:*:enterprise:*:*:*", "matchCriteriaId": "A7286C51-077E-4093-9AF9-66CEE22915AA", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue has been discovered in GitLab CE/EE affecting all versions starting from 12.3 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. A Regular Expression Denial of Service was possible by adding a large string in timeout input in gitlab-ci.yml file."}, {"lang": "es", "value": "Se ha descubierto un problema en GitLab CE/EE que afecta a todas las versiones desde 12.3 anteriores a 16.3.6, todas las versiones desde 16.4 anteriores a 16.4.2, todas las versiones desde 16.5 anteriores a 16.5.1. Fue posible una Regular Expression Denial of Service agregando una cadena grande en la entrada de tiempo de espera en el archivo gitlab-ci.yml."}], "id": "CVE-2023-3909", "lastModified": "2026-06-17T06:15:18.740", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 1.4, "source": "cve@gitlab.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-3909", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-07-24T13:29:29.851628Z", "version": "2.0.3"}}]}, "published": "2023-11-06T13:15:09.653", "references": [{"source": "cve@gitlab.com", "tags": ["Broken Link"], "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/418763"}, {"source": "cve@gitlab.com", "tags": ["Permissions Required"], "url": "https://hackerone.com/reports/2050269"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link"], "url": "https://gitlab.com/gitlab-org/gitlab/-/issues/418763"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required"], "url": "https://hackerone.com/reports/2050269"}], "sourceIdentifier": "cve@gitlab.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-1333"}], "source": "cve@gitlab.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-1333"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}

{}