CVE-2005-2088: Apache HTTP Server

Medium severity, CVSS 4.3. EPSS: 20.5% chance of exploitation in the next 30 days.

The Apache HTTP server before 1.3.34, and 2.0.x before 2.0.55, when acting as an HTTP proxy, allows remote attackers to poison the web cache, bypass web application firewall protection, and conduct XSS attacks via an HTTP request with both a "Transfer-Encoding: chunked" header and a Content-Length header, which causes Apache to incorrectly handle and forward the body of the request in a way that causes the receiving server to process it as a separate HTTP request, aka "HTTP Request Smuggling."

Affected products

• Apache HTTP Server: from 2.0.35, before 2.0.55 (fixed in 2.0.55)
• Debian Debian Linux: version 3.0 only; version 3.1 only

Published 2005-07-05. Last modified 2026-06-16.