Main Vulnerability Database Vulnerabilities #VU166000

Use-after-free in Google Chromium - CVE-2026-126891

Published: November 12, 2026

Vulnerability identifier: #VU166000

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-2026-126891

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 V8 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

How to mitigate CVE-2026-126891

Install update from vendor's website.

Google Chromium - update to 157.0.8103.78
Google Chrome - update to 157.0.8103.78

External References

Related Security Bulletins