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CVE-2026-11288 Google CVE debrief

CVE-2026-11288 is a vulnerability in Google Chrome prior to version 149.0.7827.53. The issue is related to insufficient policy enforcement in CSS, which could allow a remote attacker to leak cross-origin data via a crafted HTML page. The Chromium security severity of this vulnerability is rated as Low, and it has a CVSS score of 6.5, categorized as MEDIUM severity.

Vendor
Google
Product
Chrome
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-05
Original CVE updated
2026-06-09
Advisory published
2026-06-05
Advisory updated
2026-06-09

Who should care

Users of Google Chrome prior to version 149.0.7827.53 should update to the latest version to mitigate this vulnerability. This issue does not affect Apple macOS, Linux kernel, or Microsoft Windows.

Technical summary

The vulnerability is caused by insufficient policy enforcement in CSS in Google Chrome. This could allow a remote attacker to leak cross-origin data via a crafted HTML page. The issue is addressed in Google Chrome version 149.0.7827.53 and later.

Defensive priority

Medium

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.53 or later.

Evidence notes

The CVE record and details are sourced from official databases.

Official resources

CVE-2026-11288 was published on 2026-06-05T00:17:06.323Z and modified on 2026-06-09T13:59:03.307Z.