Main Vulnerability Database Vulnerabilities #VU144098

Improper Restriction of Rendered UI Layers or Frames in Mozilla Firefox and Firefox for Android - CVE-2026-74951

Published: August 18, 2026

Vulnerability identifier: #VU144098

CSH Severity: Low

CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-74951

CWE-ID: CWE-1021

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform clickjacking.

The vulnerability exists due to improper UI protection in Firefox for Android when rendering user interface elements. A remote attacker can present crafted content to perform clickjacking.

Affected software

Mozilla Firefox
Firefox for Android

How to mitigate CVE-2026-74951

Install security update from vendor's website.

Mozilla Firefox - update to 154.0
Firefox for Android - update to 154.0

External References

Related Security Bulletins