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CVE-2026-11048 Google CVE debrief

CVE-2026-11048 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 same-origin policy via a crafted Chrome Extension. The CVSS score for this vulnerability is 6.5, indicating a medium severity. The vulnerability was published on [cvePublishedAt] and modified on [cveModifiedAt].

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. This allows an attacker who convinces a user to install a malicious extension to bypass same-origin policy 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 untrusted sources.
  • Monitor for suspicious activity and implement security measures to prevent exploitation.

Evidence notes

The vulnerability is analyzed and has a CVSS score of 6.5, indicating a medium severity.

Official resources

CVE-2026-11048 was published on 2026-06-04T23:17:09.257Z and modified on 2026-06-08T15:04:35.063Z.