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CVE-2026-11659 Google CVE debrief

CVE-2026-11659 is a critical vulnerability in Google Chrome on Linux, with a CVSS score of 9.6. The vulnerability is caused by an integer overflow in the UI, which allows a remote attacker to potentially perform a sandbox escape via a crafted HTML page. The vulnerability was published on June 9, 2026, and has been assigned a high severity rating by Chromium.

Vendor
Google
Product
Chrome
CVSS
CRITICAL 9.6
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 Linux, particularly those who browse the internet and may be exposed to crafted HTML pages.

Technical summary

The vulnerability is caused by an integer overflow in the UI of Google Chrome on Linux. This allows a remote attacker to potentially perform a sandbox escape via a crafted HTML page. The vulnerability has been assigned a CVSS score of 9.6 and a high severity rating by Chromium.

Defensive priority

High

Recommended defensive actions

  • Update Google Chrome to version 149.0.7827.103 or later.
  • Refer to [ref-4](https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.html) for more information on the stable channel update for desktop.

Evidence notes

The vulnerability was published on June 9, 2026, and has been assigned a high severity rating by Chromium. The vulnerability affects Google Chrome on Linux prior to version 149.0.7827.103.

Official resources

CVE-2026-11659 was published on 2026-06-09T00:16:48.923Z and modified on 2026-06-09T14:58:11.683Z.