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CVE-2026-6754

Use-after-free in the JavaScript Engine component

CVSS 7.5 HIGHEPSS 0.4%CWE-416
Use-after-free in the JavaScript Engine component. This vulnerability was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Productos afectados
Mozilla · FirefoxMozilla · Thunderbird

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Referencias
https://bugzilla.mozilla.org/show_bug.cgi?id=2027541https://www.mozilla.org/security/advisories/mfsa2026-30/https://www.mozilla.org/security/advisories/mfsa2026-31/https://www.mozilla.org/security/advisories/mfsa2026-32/https://www.mozilla.org/security/advisories/mfsa2026-33/https://www.mozilla.org/security/advisories/mfsa2026-34/