Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.
En bref
Sévérité
CRITICAL 9.1
Exploitation
Exploitation connue (CISA KEV) · ajoutée le 2025-05-01 Exploitée selon l'ENISA depuis le 2025-05-01
EPSS
EPSS 99.96 % · centile 100 (2026-10-28)
État
PUBLISHED
Publiée
Mise à jour
Attribuée par
apache
Statut NVD
Analyzed
Description
Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure.
Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected. Some unsafe RewiteRules will be broken by this change and the rewrite flag "UnsafePrefixStat" can be used to opt back in once ensuring the substitution is appropriately constrained.
