https://feed.craftedsignal.io/tags/mitigation-bypass/Trending threats, MITRE ATT&CK coverage, and detection metadata — refreshed continuously.Hugoenhello@craftedsignal.iohello@craftedsignal.ioTue, 24 Mar 2026 13:16:06 +0000https://feed.craftedsignal.io/briefs/2026-03-firefox-mitigation-bypass/Tue, 24 Mar 2026 13:16:06 +0000hello@craftedsignal.iohttps://feed.craftedsignal.io/briefs/2026-03-firefox-mitigation-bypass/CVE-2026-4700 is a critical vulnerability in the Networking: HTTP component of Firefox, Firefox ESR, and Thunderbird, allowing a mitigation bypass in versions prior to Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.<p>CVE-2026-4700 is a mitigation bypass vulnerability affecting Mozilla Firefox, Firefox ESR, and Thunderbird. The vulnerability resides within the Networking: HTTP component and impacts versions earlier than Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9. Successful exploitation could allow an attacker to bypass intended security mitigations, potentially leading to further compromise of the affected system. This vulnerability was disclosed on March 24, 2026, and poses a…</p> criticaladvisorycve-2026-4700firefoxthunderbirdmitigation-bypass