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PatchSiren cyber security CVE debrief

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
2026-07-23
Advisory published
2026-06-05
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. 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.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11288 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11288

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

  • CVE-2026-11288 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11288

    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.