CVE-2025-13013: Mozilla Firefox

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

Mitigation bypass in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 145, Firefox ESR 140.5, Firefox ESR 115.30, Thunderbird 145, and Thunderbird 140.5.

Affected products

• Mozilla Firefox: before 115.30.0 (fixed in 115.30.0); before 145.0 (fixed in 145.0); from 140.0, before 140.5.0 (fixed in 140.5.0)

Published 2025-11-11. Last modified 2026-06-17.