Protection mechanism failure in Google Chromium - CVE-2026-121135

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Main Vulnerability Database Vulnerabilities #VU159247

Protection mechanism failure in Google Chromium - CVE-2026-121135

Published: November 4, 2026


Vulnerability identifier: #VU159247
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-121135
CWE-ID: CWE-693
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to an unspecified error in Platform in Google Chrome. A remote attacker can create a specially crafted web page, trick the victim into visiting it and bypass implemented security restrictions.


Affected software

Google Chromium
Google Chrome
Chrome OS

How to mitigate CVE-2026-121135

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

External References

Related Security Bulletins