CVE-2007-6421: Apache HTTP Server

Low severity, CVSS 3.5. EPSS: 8.3% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in balancer-manager in mod_proxy_balancer in the Apache HTTP Server 2.2.0 through 2.2.6 allows remote attackers to inject arbitrary web script or HTML via the (1) ss, (2) wr, or (3) rr parameters, or (4) the URL.

Affected products

• Apache HTTP Server: affected versions not specified; version 2.2 only; version 2.2.1 only; version 2.2.2 only; version 2.2.3 only; version 2.2.4 only; …

Published 2008-01-08. Last modified 2026-06-16.