CVE-2011-2976: Mozilla Bugzilla

Medium severity, CVSS 4.3. EPSS: 1.4% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in Bugzilla 2.16rc1 through 2.22.7, 3.0.x through 3.3.x, and 3.4.x before 3.4.12 allows remote attackers to inject arbitrary web script or HTML via vectors involving a BUGLIST cookie.

Affected products

• Mozilla Bugzilla: version 2.16 only; version 2.16.1 only; version 2.16.2 only; version 2.16.3 only; version 2.16.4 only; version 2.16.5 only; …

Published 2011-08-09. Last modified 2026-06-16.