CVE-2026-74957 is a vulnerability in Mozilla Firefox
Published on August 18, 2026
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, and Firefox ESR 153.1.
Products Associated with CVE-2026-74957
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Affected Versions
Mozilla Firefox:- Version 140.14, <= 140.* is unaffected.
- Version 153.1, <= 153.* is unaffected.
- Version 154, <= * is unaffected.