Input validation error in Mozilla Firefox and Firefox for Android - CVE-2026-124852
Published: November 10, 2026
Vulnerability identifier: #VU164569
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-124852
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to trigger incorrect processing that may compromise browser security.
The vulnerability exists due to incorrect boundary checks in Firefox's Graphics: CanvasWebGL component when processing graphics input. A remote attacker can supply crafted input to trigger processing outside intended limits.
Affected software
Mozilla Firefox
Firefox for Android
Firefox for Android
How to mitigate CVE-2026-124852
Install security update from vendor's website.
Mozilla Firefox - update to 160.0
Firefox for Android - update to 160.0
Firefox for Android - update to 160.0