CVE-2026-74239
Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-22
Limitación incorrecta de nombre de ruta a un directorio restringido (Path Traversal)
Fecha de publicación:
08/09/2026
Última modificación:
09/09/2026
Descripción
*** Pendiente de traducción *** XenForo before 2.3.13 contains a path traversal vulnerability in the style archive importer on Windows deployments that allows authenticated non-super administrators with style permissions to write arbitrary files outside the intended extraction directory by using backslash-based traversal sequences in ZIP member names. Attackers can craft a malicious ZIP archive with backslash path separators that bypass forward-slash validation to write arbitrary bytes to any web-server-writable path, including the public web root, achieving persistent code execution as the web-server account.
Impacto
Puntuación base 4.0
8.60
Gravedad 4.0
ALTA
Puntuación base 3.x
7.20
Gravedad 3.x
ALTA
Referencias a soluciones, herramientas e información
- https://bombobombone.github.io/posts/cve-2026-74239/
- https://github.com/BomboBombone/CVE-2026-74239
- https://www.vulncheck.com/advisories/xenforo-path-traversal-via-style-archive-importer-on-windows
- https://xenforo.com/community/threads/security-fixes-released-for-all-xenforo-and-media-gallery-versions-2-2-0-2-3-12.239856/
- https://xenforo.com/community/threads/xenforo-2-3-13-and-add-ons-released-includes-security-fixes.239857/