HTTP Response Manipulation Vulnerability in ModSecurity Web Application Firewall
CVE-2025-54571

6.9MEDIUM

Key Information:

Vendor

Owasp-modsecurity

Status
Modsecurity
Vendor
CVE Published:
6 August 2025

What is CVE-2025-54571?

ModSecurity, an open-source web application firewall for Apache, IIS, and Nginx, has a vulnerability in versions 2.9.11 and earlier that allows attackers to manipulate the HTTP response’s Content-Type. This manipulation can lead to serious security risks, including Cross-Site Scripting (XSS) and unauthorized disclosure of script source code. This issue was addressed in version 2.9.12, highlighting the importance of keeping security software up to date to mitigate potential threats.

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Affected Version(s)

ModSecurity < 2.9.12

References

https://github.com/owasp-modsecurity/ModSecurity/security...
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https://github.com/owasp-modsecurity/ModSecurity/issues/2514
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https://github.com/owasp-modsecurity/ModSecurity/commit/6...
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CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

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