CVE-2025-54571 — Unchecked Return Value in Modsecurity

CWE-252 — Unchecked Return ValueCWE-79 — Cross-site Scripting6 documents6 sources
Severity
6.9MEDIUMNVD
EPSS
0.1%
top 81.61%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Owasp-modsecurity ModsecurityOwasp Modsecurity
Timeline
PublishedAug 6
Latest updateJan 15

Description

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.

CVSS vector

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

Affected Packages2 packages

▶NVDowasp/modsecurity2.0.0 — 2.9.12
▶CVEListV5owasp-modsecurity/modsecurity< 2.9.12

Patches

Patch: github.com ↗

🔴Vulnerability Details

2
OSV
CVE-2025-54571: ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx↗2025-08-06
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CVEList
ModSecurity's Insufficient Return Value Handling can Lead to XSS and Source Code Disclosure↗2025-08-05
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📋Vendor Advisories

3
Oracle
Oracle Oracle Communications Risk Matrix: Core (ModSecurity) — CVE-2025-54571↗2026-01-15
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Red Hat
mod_security: ModSecurity Content-Type Override Vulnerability↗2025-08-05
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Debian
CVE-2025-54571: modsecurity-apache - ModSecurity is an open source, cross platform web application firewall (WAF) eng...↗2025
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CVE-2025-54571 — Unchecked Return Value in Modsecurity | cvebase