Vulnerability in Google Chrome

CVE-2026-11174

Inappropriate implementation in Site Isolation in Google Chrome prior to 149.0.7827.53 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-11174?
CVE-2026-11174 is a medium-severity vulnerability in Google Chrome, classified under Protection Mechanism Failure. CVSS score: 5.3/10. Published 2026-06-04.
How severe is CVE-2026-11174?
Medium severity. CVSS v3 base score is 5.3 out of 10.