CVE-2012-5883: Mozilla Bugzilla

Medium severity, CVSS 4.3. EPSS: 2.1% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in the Flash component infrastructure in YUI 2.8.0 through 2.9.0, as used in Bugzilla 3.7.x and 4.0.x before 4.0.9, 4.1.x and 4.2.x before 4.2.4, and 4.3.x and 4.4.x before 4.4rc1, allows remote attackers to inject arbitrary web script or HTML via vectors related to swfstore.swf, a similar issue to CVE-2010-4209.

Affected products

• Mozilla Bugzilla: version 3.7 only; version 3.7.1 only; version 3.7.2 only; version 3.7.3 only; version 4.0 only; version 4.0.1 only; …
• Yahoo Yui: version 2.8.0 only; version 2.8.1 only; version 2.8.2 only; version 2.9.0 only

Published 2012-11-16. Last modified 2026-06-16.