CVE-2015-0801: Mozilla Firefox

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

Mozilla Firefox before 37.0, Firefox ESR 31.x before 31.6, and Thunderbird before 31.6 allow remote attackers to bypass the Same Origin Policy and execute arbitrary JavaScript code with chrome privileges via vectors involving anchor navigation, a similar issue to CVE-2015-0818.

Affected products

• Mozilla Firefox: up to and including 31.5.3; up to and including 36.0.4; version 31.0 only; version 31.1.0 only; version 31.1.1 only; version 31.3.0 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 Thunderbird: up to and including 31.5

Published 2015-04-01. Last modified 2026-06-17.