Improper Authorization in Google Chromium - CVE-2026-91734

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Main Vulnerability Database Vulnerabilities #VU150120

Improper Authorization in Google Chromium - CVE-2026-91734

Published: September 16, 2026


Vulnerability identifier: #VU150120
CSH Severity: Medium
CVSS v4: 7.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-91734
CWE-ID: CWE-285
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 incorrect authorization in Core in Google Chrome. A remote attacker can trick the victim to visit a specially crafted website, bypass implemented security measures and execute arbitrary code.


Affected software

Google Chromium
Google Chrome
Debian Linux
chromium (Debian package)

How to mitigate CVE-2026-91734

Install update from vendor's website.

Google Chromium - update to 153.0.8010.47
Google Chrome - update to 153.0.8010.47
chromium (Debian package) - update to 153.0.8010.47-2~deb13u1

External References

Related Security Bulletins