CVE-2026-8034
Gravedad CVSS v4.0:
ALTA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
07/05/2026
Última modificación:
11/05/2026
Descripción
*** Pendiente de traducción *** A server-side request forgery (SSRF) vulnerability was identified in the GitHub Enterprise Server notebook viewer that allowed an attacker to access internal services by exploiting URL parser confusion between the validation layer and the HTTP request library. The hostname validation used a different URL parser than the request library, enabling a crafted URL to pass validation while directing the request to an unintended host. Exploitation required network access to the GitHub Enterprise Server instance. This vulnerability affected all versions of GitHub Enterprise Server prior to 3.21 and was fixed in versions 3.16.18, 3.17.15, 3.18.9, 3.19.6, and 3.20.2. This vulnerability was reported via the GitHub Bug Bounty program.
Impacto
Puntuación base 4.0
7.90
Gravedad 4.0
ALTA
Puntuación base 3.x
9.80
Gravedad 3.x
CRÍTICA
Productos y versiones vulnerables
| CPE | Desde | Hasta |
|---|---|---|
| cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | 3.16.18 (excluyendo) | |
| cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | 3.17.0 (incluyendo) | 3.17.15 (excluyendo) |
| cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | 3.18.0 (incluyendo) | 3.18.9 (excluyendo) |
| cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | 3.19.0 (incluyendo) | 3.19.6 (excluyendo) |
| cpe:2.3:a:github:enterprise_server:*:*:*:*:*:*:*:* | 3.20.0 (incluyendo) | 3.20.2 (excluyendo) |
Para consultar la lista completa de nombres de CPE con productos y versiones, ver esta página
Referencias a soluciones, herramientas e información
- https://docs.github.com/en/enterprise-server@3.16/admin/release-notes#3.16.18
- https://docs.github.com/en/enterprise-server@3.17/admin/release-notes#3.17.15
- https://docs.github.com/en/enterprise-server@3.18/admin/release-notes#3.18.9
- https://docs.github.com/en/enterprise-server@3.19/admin/release-notes#3.19.6
- https://docs.github.com/en/enterprise-server@3.20/admin/release-notes#3.20.2



