CVE-2005-2963: Mod Auth Shadow

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

The mod_auth_shadow module 1.0 through 1.5 and 2.0 for Apache with AuthShadow enabled uses shadow authentication for all locations that use the require group directive, even when other authentication mechanisms are specified, which might allow remote authenticated users to bypass security restrictions.

Affected products

• Mod Auth Shadow Mod Auth Shadow: version 1.0 only; version 1.1 only; version 1.2 only; version 1.3 only; version 1.4 only; version 1.5 only; …

Published 2005-10-13. Last modified 2026-06-16.