PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-11220 Google CVE debrief

CVE-2026-11220 is a vulnerability in Google Chrome prior to version 149.0.7827.53. The issue is related to Insufficient validation of untrusted input in Navigation, which could allow a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. The Chromium security severity of this vulnerability is rated as Low. The CVSS score is 6.5, with a severity rating of MEDIUM.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-04
Original CVE updated
2026-06-05
Advisory published
2026-06-04
Advisory updated
2026-06-05

Who should care

Users of Google Chrome prior to version 149.0.7827.53 should update to the latest version to mitigate this vulnerability.

Technical summary

The vulnerability is caused by Insufficient validation of untrusted input in Navigation in Google Chrome. This could allow a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Defensive priority

Medium

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.

Evidence notes

The CVE was published on 2026-06-04T23:17:29.680Z and modified on 2026-06-05T20:23:54.270Z.

Official resources

CVE-2026-11220 was published on 2026-06-04T23:17:29.680Z and modified on 2026-06-05T20:23:54.270Z.