CVE-2025-54571
ModSecurity's Insufficient Return Value Handling can Lead to XSS and Source Code Disclosure
MEDIUM 6.9EPSS 0.3%
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. In versions 2.9.11and 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.
- Affected
- owasp-modsecurity · ModSecurity
- CVSS v4.0 GITHUB
- 6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 NVD
- 6.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - EPSS
- 0.31% chance of exploitation in the next 30 days, 22nd percentile
- Published
- 2025-08-05
- Updated
- 2025-11-03
Proof-of-concept exploits (2)
- owasp-modsecurity/ModSecurity/issues/25149804★ · 2026-10-15
- owasp-modsecurity/ModSecurity/security/advisories/GHSA-cg44-9m43-3f9v