CVE-2008-2801: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 2.8% chance of exploitation in the next 30 days.

Mozilla Firefox before 2.0.0.15 and SeaMonkey before 1.1.10 do not properly implement JAR signing, which allows remote attackers to execute arbitrary code via (1) injection of JavaScript into documents within a JAR archive or (2) a JAR archive that uses relative URLs to JavaScript files.

Affected products

• Mozilla Firefox: up to and including 2.0.0.14; version 2.0 only; version 2.0.0.1 only; version 2.0.0.2 only; version 2.0.0.3 only; version 2.0.0.4 only; …
• Mozilla Seamonkey: up to and including 1.1.9; version 1.1 only; version 1.1.2 only; version 1.1.3 only; version 1.1.4 only; version 1.1.5 only; …

Published 2008-07-07. Last modified 2026-06-16.