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PatchSiren cyber security CVE debrief

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

Who should care

Users of Google Chrome prior to version 149.0.7827.53, 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.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11026 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11026

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

  • CVE-2026-11026 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11026

    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.