CVE-2025-47947

CVE-2025-47947 affects ModSecurity up to v2.9.8, where a DoS can occur when the payload is application/json and a sanitiseMatchedBytes action is present. A patch was developed (pull request 3389) and is expected in v2.9.9; no public workarounds are listed. Related advisories confirm denial-of-ser...

ModSecurity -- possible DoS vulnerability

[email protected] reports: ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content...

PT-2025-22442 · Unknown +6 · Modsecurity +6

Name of the Vulnerable Software and Affected Versions: ModSecurity versions up to and including 2.9.8 modsecurity-apache version 2.9.3-3+deb11u3 and earlier for Debian 11 bullseye modsecurity-apache version 2.9.7-1+deb12u1 and earlier for Debian bookworm Description: A flaw was found in the mod...

CVE-2025-47947: Excessive Platform Resource Consumption within a Loop

ModSecurity is an open source, cross platform web application firewall WAF engine for Apache, IIS and Nginx. Versions up to and including 2.9.8 are vulnerable to denial of service in one special case in stable released versions: when the payload's content type is application/json, and there is at...