Improper privilege management in Google Chromium - CVE-2026-121234
Published: November 4, 2026
Vulnerability identifier: #VU159116
CSH Severity: Medium
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-121234
CWE-ID: CWE-269
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to escalate privileges.
The vulnerability exists due to improper privilege management in the Contacts component of Google Chrome when enforcing privilege boundaries. A remote attacker can exploit this weakness to gain privileges beyond those intended.
Affected software
Google Chromium
Google Chrome
Google Chrome
How to mitigate CVE-2026-121234
Install security update from vendor's website.
Google Chromium - update to 157.0.8103.38
Google Chrome - update to 157.0.8103.38
Google Chrome - update to 157.0.8103.38