CVE-2026-15996

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Because request parameters were parsed before routing and authentication, any POST endpoint could be used to trigger the condition, which could render the instance unresponsive. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.20.3, 3.19.7, 3.18.10, and 3.17.16."}, {"lang": "es", "value": "Una vulnerabilidad de denegaci\u00f3n de servicio fue identificada en GitHub Enterprise Server que permit\u00eda a un atacante no autenticado causar un consumo excesivo de CPU y agotar el grupo de procesos de trabajo que manejan las solicitudes enviando una solicitud HTTP POST codificada en formulario manipulada que conten\u00eda par\u00e1metros profundamente anidados. Debido a que los par\u00e1metros de la solicitud se analizaban antes del enrutamiento y la autenticaci\u00f3n, cualquier endpoint POST pod\u00eda usarse para desencadenar la condici\u00f3n, lo que pod\u00eda dejar la instancia sin respuesta. Esta vulnerabilidad afectaba a todas las versiones de GitHub Enterprise Server anteriores a la 3.21 y fue corregida en las versiones 3.20.3, 3.19.7, 3.18.10 y 3.17.16."}], "lastModified": "2026-10-23T21:10:00.157", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "42CD4A0C-A4D0-4C5E-B971-11B3AD5F9D1E", "versionEndExcluding": "3.17.16"}, {"criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "B3D5BD25-0F18-4915-9399-D42302247396", "versionEndExcluding": "3.18.10", "versionStartIncluding": "3.18.0"}, {"criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "4FF939CE-B42A-4091-ACF0-AF80FFBFDC25", "versionEndExcluding": "3.19.7", "versionStartIncluding": "3.19.0"}, {"criteria": "cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BA3298CD-3841-491D-8056-7AC03FC6473F", "versionEndExcluding": "3.20.3", "versionStartIncluding": "3.20.0"}], "operator": "OR"}]}], "sourceIdentifier": "product-cna@github.com"}