CVE-2021-22863

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Forking is disabled by default for organization owned private repositories and would prevent this vulnerability. Additionally, branch protections such as required pull request reviews or status checks would prevent unauthorized commits from being merged without further review or validation. This vulnerability affected all versions of GitHub Enterprise Server since 2.12.22 and was fixed in versions 2.20.24, 2.21.15, 2.22.7 and 3.0.1. This vulnerability was reported via the GitHub Bug Bounty program."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-285", "description": "CWE-285 Improper Authorization", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-03-03T03:25:23.000Z", "orgId": "82327ea3-741d-41e4-88f8-2cf9e791e760", "shortName": "GitHub_P"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://docs.github.com/en/enterprise-server%402.20/admin/release-notes#2.20.24"}, {"tags": ["x_refsource_MISC"], "url": "https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.15"}, {"tags": ["x_refsource_MISC"], "url": "https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.7"}, {"tags": ["x_refsource_MISC"], "url": "https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.1"}], "source": {"discovery": "EXTERNAL"}, "title": "Improper access control in GitHub Enterprise Server leading to unauthorized changes to maintainer permissions on pull requests", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "product-cna@github.com", "ID": "CVE-2021-22863", "STATE": "PUBLIC", "TITLE": "Improper access control in GitHub Enterprise Server leading to unauthorized changes to maintainer permissions on pull requests"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "GitHub Enterprise Server", "version": {"version_data": [{"version_affected": "<", "version_name": "2.20", "version_value": "2.20.24"}, {"version_affected": "<", "version_name": "2.21", "version_value": "2.21.15"}, {"version_affected": "<", "version_name": "2.22", "version_value": "2.22.7"}, {"version_affected": "<", "version_name": "3.0", "version_value": "3.0.1"}]}}]}, "vendor_name": "GitHub"}]}}, "credit": [{"lang": "eng", "value": "Teddy Katz"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "An improper access control vulnerability was identified in the GitHub Enterprise Server GraphQL API that allowed authenticated users of the instance to modify the maintainer collaboration permission of a pull request without proper authorization. By exploiting this vulnerability, an attacker would be able to gain access to head branches of pull requests opened on repositories of which they are a maintainer. Forking is disabled by default for organization owned private repositories and would prevent this vulnerability. Additionally, branch protections such as required pull request reviews or status checks would prevent unauthorized commits from being merged without further review or validation. This vulnerability affected all versions of GitHub Enterprise Server since 2.12.22 and was fixed in versions 2.20.24, 2.21.15, 2.22.7 and 3.0.1. This vulnerability was reported via the GitHub Bug Bounty program."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-285 Improper Authorization"}]}]}, "references": {"reference_data": [{"name": "https://docs.github.com/en/enterprise-server@2.20/admin/release-notes#2.20.24", "refsource": "MISC", "url": "https://docs.github.com/en/enterprise-server@2.20/admin/release-notes#2.20.24"}, {"name": "https://docs.github.com/en/enterprise-server@2.21/admin/release-notes#2.21.15", "refsource": "MISC", "url": "https://docs.github.com/en/enterprise-server@2.21/admin/release-notes#2.21.15"}, {"name": "https://docs.github.com/en/enterprise-server@2.22/admin/release-notes#2.22.7", "refsource": "MISC", "url": "https://docs.github.com/en/enterprise-server@2.22/admin/release-notes#2.22.7"}, {"name": "https://docs.github.com/en/enterprise-server@3.0/admin/release-notes#3.0.1", "refsource": "MISC", "url": "https://docs.github.com/en/enterprise-server@3.0/admin/release-notes#3.0.1"}]}, "source": {"discovery": "EXTERNAL"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T18:51:07.572Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://docs.github.com/en/enterprise-server%402.20/admin/release-notes#2.20.24"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.15"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.7"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.1"}]}]}, "cveMetadata": {"assignerOrgId": "82327ea3-741d-41e4-88f8-2cf9e791e760", "assignerShortName": "GitHub_P", "cveId": "CVE-2021-22863", "datePublished": "2021-03-03T03:25:23.000Z", "dateReserved": "2021-01-06T00:00:00.000Z", "dateUpdated": "2024-08-03T18:51:07.572Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "GitHub Enterprise Server", "vendor": "GitHub", "versions": [{"lessThan": "2.20.24", "status": "affected", "version": "2.20", "versionType": "custom"}, {"lessThan": "2.21.15", "status": "affected", "version": "2.21", "versionType": "custom"}, {"lessThan": "2.22.7", "status": "affected", "version": "2.22", "versionType": "custom"}, {"lessThan": "3.0.1", "status": "affected", "version": "3.0", "versionType": "custom"}]}], "source": "product-cna@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "672A9206-E6DA-4137-8AB2-A047F700902A", "versionEndExcluding": "2.20.24", "versionStartIncluding": "2.12.22", "vulnerable": true}, {"criteria": "cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "33F7B688-318D-452D-A804-49984D527FDA", "versionEndExcluding": "2.21.15", "versionStartIncluding": "2.21.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:github:github:*:*:*:*:enterprise:*:*:*", "matchCriteriaId": "5333B472-BF06-4427-9344-72CD5B2429CD", "versionEndExcluding": "2.22.7", "versionStartIncluding": "2.22.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:github:github:*:*:*:*:*:*:*:*", "matchCriteriaId": "6929FFB5-AC83-412F-A6FF-0593F64A0688", "versionEndExcluding": "3.0.1", "versionStartIncluding": "3.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An improper access control vulnerability was identified in the GitHub Enterprise Server GraphQL API that allowed authenticated users of the instance to modify the maintainer collaboration permission of a pull request without proper authorization. By exploiting this vulnerability, an attacker would be able to gain access to head branches of pull requests opened on repositories of which they are a maintainer. Forking is disabled by default for organization owned private repositories and would prevent this vulnerability. Additionally, branch protections such as required pull request reviews or status checks would prevent unauthorized commits from being merged without further review or validation. This vulnerability affected all versions of GitHub Enterprise Server since 2.12.22 and was fixed in versions 2.20.24, 2.21.15, 2.22.7 and 3.0.1. This vulnerability was reported via the GitHub Bug Bounty program."}, {"lang": "es", "value": "Se identific\u00f3 una vulnerabilidad de control de acceso inadecuada en la API GraphQL de GitHub Enterprise Server que permit\u00eda a los usuarios autenticados de la instancia modificar el permiso de colaboraci\u00f3n del mantenedor de un pull request sin la autorizaci\u00f3n adecuada. Al explotar esta vulnerabilidad, un atacante podr\u00eda obtener acceso a las ramas principales de los pull requests abiertos en los repositorios de los que es mantenedor. La bifurcaci\u00f3n est\u00e1 deshabilitada por defecto para los repositorios privados propiedad de la organizaci\u00f3n y evitar\u00eda esta vulnerabilidad. Adem\u00e1s, las protecciones de las ramas, como las revisiones requeridas de las solicitudes de extracci\u00f3n o las comprobaciones de estado, impedir\u00edan que los commits no autorizados se fusionaran sin m\u00e1s revisi\u00f3n o validaci\u00f3n. Esta vulnerabilidad afectaba a todas las versiones de GitHub Enterprise Server desde la versi\u00f3n 2.12.22 y fue corregida en las versiones 2.20.24, 2.21.15, 2.22.7 y 3.0.1. Esta vulnerabilidad fue reportada a trav\u00e9s del programa GitHub Bug Bounty"}], "id": "CVE-2021-22863", "lastModified": "2026-06-17T03:37:54.170", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 5.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "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": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-03T04:15:13.240", "references": [{"source": "product-cna@github.com", "url": "https://docs.github.com/en/enterprise-server%402.20/admin/release-notes#2.20.24"}, {"source": "product-cna@github.com", "url": "https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.15"}, {"source": "product-cna@github.com", "url": "https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.7"}, {"source": "product-cna@github.com", "url": "https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.1"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://docs.github.com/en/enterprise-server%402.20/admin/release-notes#2.20.24"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://docs.github.com/en/enterprise-server%402.21/admin/release-notes#2.21.15"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://docs.github.com/en/enterprise-server%402.22/admin/release-notes#2.22.7"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://docs.github.com/en/enterprise-server%403.0/admin/release-notes#3.0.1"}], "sourceIdentifier": "product-cna@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-285"}], "source": "product-cna@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "NVD-CWE-Other"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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