CVE-2008-0416: Mozilla Firefox

Medium severity, CVSS 4.3. EPSS: 1.6% chance of exploitation in the next 30 days.

Multiple cross-site scripting (XSS) vulnerabilities in Mozilla Firefox before 2.0.0.12, Thunderbird before 2.0.0.12, and SeaMonkey before 1.1.8 allow remote attackers to inject arbitrary web script or HTML via certain character encodings, including (1) a backspace character that is treated as whitespace, (2) 0x80 with Shift_JIS encoding, and (3) "zero-length non-ASCII sequences" in certain Asian character sets.

Affected products

• Mozilla Firefox: up to and including 2.0.0.11
• Mozilla Seamonkey: up to and including 1.1.7
• Mozilla Thunderbird: up to and including 2.0.0.11

Published 2008-02-12. Last modified 2026-06-16.