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PatchSiren cyber security CVE debrief

CVE-2026-11203 Google CVE debrief

A medium-severity vulnerability, CVE-2026-11203, was discovered in Google Chrome on Mac. This issue is related to an inappropriate implementation in the GPU, which could allow a remote attacker to leak cross-origin data via a crafted HTML page. The vulnerability has a CVSS score of 6.5.

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 on Mac, particularly those who browse the internet and may be exposed to crafted HTML pages, should be aware of this vulnerability.

Technical summary

The vulnerability is caused by an inappropriate implementation in the GPU of Google Chrome on Mac. This could allow a remote attacker to leak cross-origin data via a crafted HTML page. The issue has been addressed in Google Chrome version 149.0.7827.53.

Defensive priority

Medium

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.
  • Be cautious when browsing the internet and avoid clicking on suspicious links or opening crafted HTML pages from untrusted sources.

Evidence notes

The CVE-2026-11203 vulnerability has been analyzed and verified by official sources, including the National Vulnerability Database (NVD) and Google Chrome's release blog.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11203 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11203

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

  • CVE-2026-11203 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11203

    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.