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CVE-2026-11026 Google CVE debrief

CVE-2026-11026 is a medium-severity vulnerability in Google Chrome prior to version 149.0.7827.53. The vulnerability is caused by an inappropriate implementation in Extensions, which allows an attacker who convinces a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension. The CVSS score for this vulnerability is 6.5, indicating a medium severity level.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-04
Original CVE updated
2026-06-08
Advisory published
2026-06-04
Advisory updated
2026-06-08

Who should care

Users of Google Chrome prior to version 149.0.7827.53, administrators of systems with Google Chrome installed, and security teams responsible for patching and vulnerability management.

Technical summary

The vulnerability is caused by an inappropriate implementation in Extensions in Google Chrome prior to version 149.0.7827.53. An attacker who convinces a user to install a malicious extension can bypass navigation restrictions via a crafted Chrome Extension.

Defensive priority

Medium

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.
  • Be cautious when installing extensions from unknown sources.
  • Monitor for suspicious activity and implement additional security measures to detect and prevent exploitation.

Evidence notes

The vulnerability was reported by [email protected] and is referenced in the Chrome release notes and Chromium issue tracker.

Official resources

CVE-2026-11026 was published on 2026-06-04T23:17:06.597Z and modified on 2026-06-08T14:26:35.773Z.