Use-after-free in Mozilla products - CVE-2026-8090
Published: May 7, 2026
Vulnerability identifier: #VU130581
CSH Severity: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-8090
CWE-ID: CWE-416
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 execute arbitrary code.
The vulnerability exists due to use-after-free in the DOM: Networking component when processing web content. A remote attacker can trigger the use-after-free with specially crafted content to execute arbitrary code.
User interaction is required to visit a specially crafted website or open a specially crafted URL.
Remediation
Install security update from vendor's website.