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CVE-2026-12291

Use-after-free in the Networking: HTTP component

CVSS 8.8 HIGHEPSS 0.3%CWE-416
Use-after-free in the Networking: HTTP component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Firefox ESR 115.37, Thunderbird 152, and Thunderbird 140.12.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Produtos afetados
Mozilla · FirefoxMozilla · Thunderbird

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Referências
https://bugzilla.mozilla.org/show_bug.cgi?id=2036929https://www.mozilla.org/security/advisories/mfsa2026-57/https://www.mozilla.org/security/advisories/mfsa2026-58/https://www.mozilla.org/security/advisories/mfsa2026-59/https://www.mozilla.org/security/advisories/mfsa2026-60/https://www.mozilla.org/security/advisories/mfsa2026-61/