Main Vulnerability Database Vulnerabilities #VU166010

Incomplete cleanup in Google Chromium - CVE-2026-126856

Published: November 12, 2026

Vulnerability identifier: #VU166010

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-2026-126856

CWE-ID: CWE-459

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to incomplete cleanup in Cache in Google Chrome. A remote attacker can trick the victim to visit a specially crafted webpage and execute arbitrary code on the system.

Affected software

Google Chromium
Google Chrome
Chrome OS

How to mitigate CVE-2026-126856

Install update from vendor's website.

Google Chromium - update to 157.0.8103.78
Google Chrome - update to 157.0.8103.78
Chrome OS - update to 150.0.7871.289

External References

https://chromereleases.googleblog.com/2026/11/stable-channel-update-for-desktop_01744469280.html
https://issues.chromium.org/issues/577260644

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