CVE-2026-2791criticalCWE-288

CVE-2026-2791: falha crítica em Mozilla Firefox

Mitigation bypass in the Networking: Cache component

Publicada em 24 fev 2026 · Atualizada em 21 abr 2026

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28Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackcvss 9.8epss 0.6%

Mitigation bypass in the Networking: Cache component. This vulnerability was fixed in Firefox 148, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Produtos afetados

Mozilla · Firefox Mozilla · Thunderbird

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No mesmo produto, das mais perigosas para as menos.

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Referências

https://bugzilla.mozilla.org/show_bug.cgi?id=2015220 https://www.mozilla.org/security/advisories/mfsa2026-13/https://www.mozilla.org/security/advisories/mfsa2026-15/https://www.mozilla.org/security/advisories/mfsa2026-16/https://www.mozilla.org/security/advisories/mfsa2026-17/