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
2026-07-23
Advisory published
2026-06-04
Advisory updated
2026-07-23

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11212 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11212

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-11212 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11212

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.