Main Vulnerability Database Vulnerabilities #VU145571

Improper access control in Google Chromium - CVE-2026-78967

Published: August 26, 2026

Vulnerability identifier: #VU145571

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-2026-78967

CWE-ID: CWE-284

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to improper access control in BFCache when handling cached page state. A remote attacker can cause the browser to use a back-forward cache state in a way that bypasses authorization checks to bypass authorization checks.

User interaction is required.

Affected software

Google Chromium
Google Chrome

How to mitigate CVE-2026-78967

Install security update from vendor's website.

Google Chromium - update to 152.0.7977.64
Google Chrome - addressed in versions 151.0.7922.175, 152.0.7977.64

External References

Related Security Bulletins