CVE-2026-74963

CVE-2026-74963CVE-2026-74963

mozilla / firefox

Description

Same-origin policy bypass in the Networking: Cookies component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

Scoring

CVSS 5.4 ()
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
Last modified2026-08-19
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.