Use-after-free in Google Chromium - CVE-2026-121076
Published: November 4, 2026
Vulnerability identifier: #VU159094
CSH Severity: High
CVSS v4: 8.6 [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]
CVE-ID: CVE-2026-121076
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the WebXR component in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it, trigger use-after-free error and execute arbitrary code on the target system.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Affected software
Google Chromium
Google Chrome
Chrome OS
Google Chrome
Chrome OS
How to mitigate CVE-2026-121076
Install update from vendor's website.
Google Chromium - update to 157.0.8103.38
Google Chrome - update to 157.0.8103.38
Chrome OS - update to 156.0.8078.93
Google Chrome - update to 157.0.8103.38
Chrome OS - update to 156.0.8078.93