CVE-2026-118008

Privilege escalation in the DOM: Navigation component

State: Published
Severity: 8.8 High
Published: Oct 27, 2026
Updated: Oct 28, 2026
Reserved: Oct 27, 2026

Description

Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 159 and Thunderbird 159.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-269 Improper Privilege Management

Affected Products

Product	Versions
FirefoxMozilla	159 and laterNot affected
ThunderbirdMozilla	159 and laterNot affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2075440
https://www.mozilla.org/security/advisories/mfsa2026-118/
https://www.mozilla.org/security/advisories/mfsa2026-121/

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