CVE-2026-100808

ALTO 8.8CVE-2026-100808 · Published 29/09/2026 · updated 05/10/2026

En resumen

CVE-2026-100808 es una vulnerabilidad ALTO (CVSS 8.8) que afecta a firefox (mozilla), thunderbird (mozilla).
Probabilidad de explotación en los próximos 30 días (EPSS): 0.30%, mayor que el 22.7% de las vulnerabilidades.
Solución: actualizar a 157.0.0, 153.4.0, 157.0 o posterior.

Package	Affected versions	Patched versions
firefox mozilla	`≥ 154.0.0, < 157.0.0< 153.4.0`	`157.0.0153.4.0`
thunderbird mozilla	`≥ 154.0, < 157.0< 153.4.0`	`157.0153.4.0`

Description

Mitigation bypass in the DOM: Service Workers component. This vulnerability was fixed in Firefox ESR 153.4, Thunderbird 157, Thunderbird 153.4, and Firefox 157.

References

bugzilla.mozilla.org/show_bug.cgi · Permissions Required
mozilla.org/security/advisories/mfsa2026-100 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-101 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-103 · Vendor Advisory
mozilla.org/security/advisories/mfsa2026-97 · Vendor Advisory

Más vulnerabilidades de firefox

Ver todo →

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free

Package

Affected versions

Patched versions

firefox

mozilla

≥ 154.0.0, < 157.0.0< 153.4.0

157.0.0153.4.0

thunderbird

mozilla

≥ 154.0, < 157.0< 153.4.0

157.0153.4.0

Más vulnerabilidades de firefox

Ver todo →