CVE-2013-4566: Mod Nss Project Mod Nss

Medium severity, CVSS 4.0. EPSS: 1.9% chance of exploitation in the next 30 days.

mod_nss 1.0.8 and earlier, when NSSVerifyClient is set to none for the server/vhost context, does not enforce the NSSVerifyClient setting in the directory context, which allows remote attackers to bypass intended access restrictions.

Affected products

• Mod Nss Project Mod Nss: up to and including 1.0.8; version 1.0 only; version 1.0.2 only; version 1.0.3 only; version 1.0.4 only; version 1.0.5 only; …
• Red Hat Enterprise Linux: version 5 only; version 6.0 only

Published 2013-12-12. Last modified 2026-06-16.