CVE-2009-2299: Hyperguard Web Application Firewall Project Hyperguard Web Application Firewall

Medium severity, CVSS 5.0. EPSS: 4.3% chance of exploitation in the next 30 days.

The Artofdefence Hyperguard Web Application Firewall (WAF) module before 2.5.5-11635, 3.0 before 3.0.3-11636, and 3.1 before 3.1.1-11637, a module for the Apache HTTP Server, allows remote attackers to cause a denial of service (memory consumption) via an HTTP request with a large Content-Length value but no POST data.

Affected products

• Hyperguard Web Application Firewall Project Hyperguard Web Application Firewall: before 2.5.5-11635 (fixed in 2.5.5-11635); from 3.0, before 3.0.3-11636 (fixed in 3.0.3-11636); from 3.1, before 3.1.1-11637 (fixed in 3.1.1-11637)

Published 2009-07-02. Last modified 2026-06-16.