CVE-2026-15996: fallo de gravedad media en GitHub Enterprise Server
Denial of service vulnerability in GitHub Enterprise Server allowed unauthenticated service disruption via deeply nested request parameters
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.6epss 0.8%
A denial of service vulnerability was identified in GitHub Enterprise Server that allowed an unauthenticated attacker to cause excessive CPU consumption and exhaust the pool of request-handling worker processes by sending a crafted form-encoded HTTP POST request containing deeply nested parameters. 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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U
Productos afectados
GitHub · Enterprise ServerCVEs relacionadas — GitHub Enterprise Server
En el mismo producto, de las más peligrosas a las menos.
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Referencias
https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.16https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.10https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.7https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.3