Input validation error in Mozilla products - CVE-2026-6762
Published: April 21, 2026
Vulnerability identifier: #VU126658
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-6762
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Mozilla Firefox
Firefox ESR
Firefox for Android
Mozilla Firefox
Firefox ESR
Firefox for Android
Software vendor:
Mozilla
Mozilla
Description
The vulnerability allows a remote attacker to spoof the user interface.
The vulnerability exists due to improper input validation in the DOM: Core & HTML component when rendering crafted web content. A remote attacker can cause the browser to process specially crafted content to spoof the user interface.
User interaction is required to visit a crafted website or URL.
Remediation
Install security update from vendor's website.