PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-11212 Google CVE debrief

CVE-2026-11212 is a Medium-severity vulnerability in Google Chrome's DevTools, which allowed an attacker to leak cross-origin data via a crafted Chrome Extension. The vulnerability was patched in Chrome version 149.0.7827.53.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 4.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-04
Original CVE updated
2026-06-06
Advisory published
2026-06-04
Advisory updated
2026-06-06

Who should care

Users of Google Chrome prior to version 149.0.7827.53, as well as administrators and security teams responsible for managing Chrome installations.

Technical summary

Insufficient policy enforcement in DevTools in Google Chrome prior to 149.0.7827.53 allowed an attacker who convinced a user to install a malicious extension to leak cross-origin data 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 Chrome extensions, and only install extensions from trusted sources.
  • Monitor Chrome installations and ensure that all users are running the latest version.

Evidence notes

CVE-2026-11212 was published on [cvePublishedAt] and modified on [cveModifiedAt]. The vulnerability has a CVSS score of 4.3 and is classified as CWE-284.

Official resources

CVE-2026-11212 was published on 2026-06-04T23:17:28.573Z and modified on 2026-06-06T01:58:11.750Z.