Main Vulnerability Database Vulnerabilities #VU126692

Input validation error in Mozilla Firefox and Firefox for Android - CVE-2026-6779

Published: April 21, 2026

Vulnerability identifier: #VU126692

CSH Severity: Low

CVSS v4.0: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

CVE-ID: CVE-2026-6779

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Mozilla

Affected software:
Mozilla Firefox
Firefox for Android

Detailed vulnerability description

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

The vulnerability exists due an unspecified error in the JavaScript Engine component. A remote attacker can bypass implemented security restrictions.

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