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PatchSiren cyber security CVE debrief

CVE-2026-11201 Google CVE debrief

CVE-2026-11201 is a high-severity vulnerability in Google Chrome prior to version 149.0.7827.53. This use-after-free issue in ServiceWorker could allow an attacker who convinces a user to install a malicious extension to execute arbitrary code. The vulnerability has a CVSS score of 8.8 and is classified as CWE-416.

Vendor
Google
Product
Chrome
CVSS
HIGH 8.8
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 a use-after-free issue in ServiceWorker, which is a component of Google Chrome that allows web applications to run in the background. An attacker could exploit this vulnerability by convincing a user to install a malicious extension, which could then execute arbitrary code.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.
  • Be cautious when installing browser extensions, and only install them from trusted sources.
  • Monitor for any suspicious activity in Google Chrome.

Evidence notes

The CVE record and NVD detail provide information on the vulnerability, including its CVSS score, CWE classification, and affected versions of Google Chrome.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11201 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11201

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

  • CVE-2026-11201 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11201

    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.