CVE-2015-0818: Mozilla Firefox

High severity, CVSS 7.5. EPSS: 3.2% chance of exploitation in the next 30 days.

Mozilla Firefox before 36.0.4, Firefox ESR 31.x before 31.5.3, and SeaMonkey before 2.33.1 allow remote attackers to bypass the Same Origin Policy and execute arbitrary JavaScript code with chrome privileges via vectors involving SVG hash navigation.

Affected products

• Mozilla Firefox: up to and including 36.0.3; version 31.0 only; version 31.1.0 only; version 31.1.1 only; version 31.3.0 only; version 31.5.1 only; …
• Mozilla Firefox ESR: version 31.1 only; version 31.2 only; version 31.3 only; version 31.4 only; version 31.5 only
• Mozilla Seamonkey: up to and including 2.33.0

Published 2015-03-24. Last modified 2026-06-17.