Protection mechanism failure in Google Chromium - CVE-2026-11266
Published: June 18, 2026
Vulnerability identifier: #VU134784
CSH Severity: Medium
CVSS v4: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-11266
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 improperly imposed security restrictions in SafeBrowsing. A remote attacker can trick the victim to visit a specially crafted webpage and bypass implemented policy.
Affected software
Google Chromium
Microsoft Edge
Google Chrome
Debian Linux
chromium (Debian package)
Microsoft Edge
Google Chrome
Debian Linux
chromium (Debian package)
How to mitigate CVE-2026-11266
Install update from vendor's website.
Google Chromium - update to 149.0.7827.53
Microsoft Edge - update to 149.0.4022.52
Google Chrome - update to 149.0.7827.53
chromium (Debian package) - addressed in versions 149.0.7827.53-1~deb12u1, 149.0.7827.53-1~deb13u1
Microsoft Edge - update to 149.0.4022.52
Google Chrome - update to 149.0.7827.53
chromium (Debian package) - addressed in versions 149.0.7827.53-1~deb12u1, 149.0.7827.53-1~deb13u1