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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
2026-06-06
Advisory published
2026-06-04
Advisory updated
2026-06-06

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.

Official resources

CVE-2026-11203 was published on 2026-06-04T23:17:27.490Z and modified on 2026-06-06T01:36:04.020Z.