CVE-2025-54571

MEDIUM6.9

ModSecurity's Insufficient Return Value Handling can Lead to XSS and Source Code Disclosure

Published Aug 5, 2025

Modified 6 months ago

Details

ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11 and below, an attacker can override the HTTP response’s Content-Type, which could lead to several issues depending on the HTTP scenario. For example, we have demonstrated the potential for XSS and arbitrary script source code disclosure in the latest version of mod_security2. This issue is fixed in version 2.9.12.

References

WEB

https://github.com/owasp-modsecurity/ModSecurity/commit/6d7e8eb18f2d7d368fb8e29516fcdeaeb8d349b8

WEB

https://github.com/owasp-modsecurity/ModSecurity/issues/2514

DETECTION

https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-cg44-9m43-3f9v

WEB

https://lists.debian.org/debian-lts-announce/2025/09/msg00008.html

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2025-54571

CVSS Analysis