CVE-2026-74954highCWE-203

CVE-2026-74954: falha de alta gravidade em Mozilla Firefox

Information disclosure due to side-channel in the Storage: Cache API component

Publicada em 18 ago 2026

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21Vexday Risk Score

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

ssvc Trackcvss 7.5epss 0.4%

Information disclosure due to side-channel in the Storage: Cache API component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

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

Produtos afetados

Mozilla · Firefox Mozilla · Thunderbird

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Referências

https://bugzilla.mozilla.org/show_bug.cgi?id=2025732 https://www.mozilla.org/security/advisories/mfsa2026-74/https://www.mozilla.org/security/advisories/mfsa2026-77/https://www.mozilla.org/security/advisories/mfsa2026-78/https://www.mozilla.org/security/advisories/mfsa2026-80/