CVE-2026-74957 Mitigation bypass in the Safe Browsing component

Mitigation bypass in the Safe Browsing component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1...

CVE-2026-74957

A mitigation bypass in Firefox's Safe Browsing component was fixed in Firefox 154, Firefox ESR 140.14, and Firefox ESR 153.1. The documents do not provide exploit details or in-the-wild exploitation status. Users should update to the patched versions. Mozilla advisory: https://www.mozilla.org/sec...