CVE-2012-0455: Mozilla Firefox

Medium severity, CVSS 4.3. EPSS: 1.8% chance of exploitation in the next 30 days.

Mozilla Firefox before 3.6.28 and 4.x through 10.0, Firefox ESR 10.x before 10.0.3, Thunderbird before 3.1.20 and 5.0 through 10.0, Thunderbird ESR 10.x before 10.0.3, and SeaMonkey before 2.8 do not properly restrict drag-and-drop operations on javascript: URLs, which allows user-assisted remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web page, related to a "DragAndDropJacking" issue.

Affected products

• Mozilla Firefox: up to and including 3.6.27; version 4.0 only; version 4.0.1 only; version 5.0 only; version 5.0.1 only; version 6.0 only; …
• Mozilla Firefox ESR: version 10.1 only; version 10.2 only
• Mozilla Seamonkey: up to and including 2.7
• Mozilla Thunderbird: up to and including 3.1.19; version 5.0 only; version 6.0 only; version 6.0.1 only; version 6.0.2 only; version 8.0 only; …
• Mozilla Thunderbird ESR: version 10.0 only; version 10.0.1 only; version 10.0.2 only

Published 2012-03-14. Last modified 2026-06-16.