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PatchSiren cyber security CVE debrief

CVE-2026-11149 Google CVE debrief

CVE-2026-11149 is a vulnerability in Google Chrome prior to version 149.0.7827.53. The issue is related to insufficient validation of untrusted input in Extensions, which allowed a remote attacker who had compromised the renderer process to perform privilege escalation via a crafted HTML page. This vulnerability has a CVSS score of 7.5 and is classified as HIGH severity.

Vendor
Google
Product
Chrome
CVSS
HIGH 7.5
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 should update to the latest version to mitigate this vulnerability. Additionally, administrators and security teams responsible for managing Chrome deployments should prioritize updating Chrome to the latest version.

Technical summary

The vulnerability is caused by insufficient validation of untrusted input in Extensions in Google Chrome prior to 149.0.7827.53. This allows a remote attacker who has compromised the renderer process to perform privilege escalation via a crafted HTML page.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.
  • Ensure that Chrome is configured to automatically update to the latest version.

Evidence notes

The CVE-2026-11149 vulnerability was published on [cvePublishedAt] and modified on [cveModifiedAt]. The vulnerability has a CVSS score of 7.5 and is classified as HIGH severity.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11149 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11149

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

  • CVE-2026-11149 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11149

    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.