Main Vulnerability Database Vulnerabilities #VU123239

#VU123239 Time-of-check Time-of-use (TOCTOU) Race Condition in Mozilla Firefox and Firefox for Android - CVE-2026-2802

Published: February 25, 2026

Vulnerability identifier: #VU123239

Vulnerability risk: Medium

CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2026-2802

CWE-ID: CWE-367

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerable software:
Mozilla Firefox
Firefox for Android

Software vendor:
Mozilla

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to a race condition in the JavaScript: GC component. A remote attacker can bypass implemented security restrictions.

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