
A critical vulnerability has been detected in ModSecurity, a widely utilized open-source web application firewall (WAF) that serves pivotal roles in protecting servers running Apache, IIS, and Nginx. Labeled CVE-2025-48866, this security flaw affects all ModSecurity versions released prior to 2.9.10. The vulnerability manifests through an exploit of the sanitizeArg and sanitizeArg actions, which can be manipulated to lead to