REDHAT-BUG-2369827: Medium severity ModSecurity modsecurity vulnerability
ModSecurity is an open source, cross platform web application firewall (WAF) engine for Apache, IIS and Nginx. Versions prior to 2.9.10 contain a denial of service vulnerability similar to GHSA-859r-vvv8-rm8r/CVE-2025-47947. The sanitiseArg (and sanitizeArg - this is the same action but an alias) is vulnerable to adding an excessive number of arguments, thereby leading to denial of service. Version 2.9.10 fixes the issue. As a workaround, avoid using rules that contain the sanitiseArg (or sanitizeArg) action.
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2369827?
REDHAT-BUG-2369827 is classified as a denial of service vulnerability in ModSecurity versions prior to 2.9.10.
How do I fix REDHAT-BUG-2369827?
To fix REDHAT-BUG-2369827, you should upgrade ModSecurity to version 2.9.10 or later.
What systems are affected by REDHAT-BUG-2369827?
REDHAT-BUG-2369827 affects all versions of ModSecurity prior to 2.9.10 on Apache, IIS, and Nginx.
What is the impact of REDHAT-BUG-2369827?
The impact of REDHAT-BUG-2369827 includes potential denial of service, which can disrupt the availability of the web application.
Who reported REDHAT-BUG-2369827?
REDHAT-BUG-2369827 was reported by the Red Hat security team and documented in their bug tracking system.