CVE-2026-74939

CVE-2026-74939CVE-2026-74939

Description

Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 154, Firefox ESR 115.39, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

Scoring

CVSS 8.8 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Last modified2026-08-18
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.