CVE-2009-1191: Apache HTTP Server

Medium severity, CVSS 5.0. EPSS: 12.4% chance of exploitation in the next 30 days.

mod_proxy_ajp.c in the mod_proxy_ajp module in the Apache HTTP Server 2.2.11 allows remote attackers to obtain sensitive response data, intended for a client that sent an earlier POST request with no request body, via an HTTP request.

Affected products

• Apache HTTP Server: version 2.2.11 only
• Canonical Ubuntu Linux: version 6.06 only; version 8.04 only; version 8.10 only; version 9.04 only

Published 2009-04-23. Last modified 2026-06-16.