Main Vulnerability Database Vulnerabilities #VU105981

Protection mechanism failure in ModSecurity - CVE-2025-27110

Published: March 24, 2025

Vulnerability identifier: #VU105981

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-27110

CWE-ID: CWE-693

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to an error when decoding encoded HTML entities. A remote attacker can bypass implemented filtration rules with encoded payload.

Affected software

ModSecurity
Fedora
libmodsecurity

How to mitigate CVE-2025-27110

Install updates from vendor's website.

ModSecurity - update to 3.0.14
libmodsecurity - addressed in versions 3.0.14-1.el9, 3.0.14-1.fc41, 3.0.14-1.fc42, 3.0.14-8.el8

External References

https://github.com/owasp-modsecurity/ModSecurity/issues/3340
https://github.com/owasp-modsecurity/ModSecurity/security/advisories/GHSA-42w7-rmv5-4x2j

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