Fiche vulnérabilité

CVE-2026-33691 : faille élevée owasp owasp modsecurity core rule set (CVSS 7.5)

Description

The OWASP core rule set (CRS) is a set of generic attack detection rules for use with compatible web application firewalls. Prior to versions 3.3.9 and 4.25.0, a bypass was identified in OWASP CRS that allows uploading files with dangerous extensions (.php, .phar, .jsp, .jspx) by inserting whitespace padding in the filename (e.g. photo. php or shell.jsp ). The affected rules do not normalize whitespace before evaluating the file extension regex, so the dot-extension check fails to match. This issue has been patched in versions 3.3.9 and 4.25.0.

En bref

Sévérité: Élevée (CVSS 7.5)
Vecteur CVSS: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Exploitation active: Non signalée par la CISA
Publication: 2 avr. 2026
Dernière mise à jour: 24 juil. 2026

Produits concernés

owasp owasp modsecurity core rule set

Références

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