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PatchSiren cyber security CVE debrief

CVE-2026-11639 Google CVE debrief

CVE-2026-11639 is a high-severity vulnerability in Google Chrome on Mac, allowing remote attackers to execute arbitrary code via a crafted HTML page. The vulnerability is caused by a use-after-free issue in the Compositing component. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system. The CVSS score for this vulnerability is 7.5, indicating a high level of severity.

Vendor
Google
Product
Chrome
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-09
Advisory published
2026-06-09
Advisory updated
2026-06-09

Who should care

Users of Google Chrome on Mac, particularly those who browse the internet and may be exposed to crafted HTML pages.

Technical summary

The vulnerability is caused by a use-after-free issue in the Compositing component of Google Chrome on Mac. This issue allows remote attackers to execute arbitrary code via a crafted HTML page. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.103 or later.
  • Be cautious when browsing the internet and avoid clicking on suspicious links or opening crafted HTML pages.

Evidence notes

The vulnerability is confirmed by the official CVE record and NVD detail pages. The CVSS score and vector are also provided by the NVD.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-11639 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-11639

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

  • CVE-2026-11639 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11639

    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.