PatchSiren cyber security CVE debrief

CVE-2026-11658 Google CVE debrief

CVE-2026-11658 is a High-severity vulnerability in Google Chrome prior to version 149.0.7827.103. The issue involves insufficient validation of untrusted input in Extensions, allowing a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page.

Vendor: Google
Product: Chrome
CVSS: MEDIUM 6.5
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-09
Original CVE updated: 2026-06-10
Advisory published: 2026-06-09
Advisory updated: 2026-06-10

Who should care

Users of Google Chrome prior to version 149.0.7827.103

Technical summary

The vulnerability, with a CVSS score of 6.5 (Medium severity), was published on 2026-06-09T00:16:48.810Z and modified on 2026-06-10T18:30:47.863Z. It is tracked under CWE-20 and CWE-noinfo.

Defensive priority

High

Recommended defensive actions

Update Google Chrome to version 149.0.7827.103 or later.

Evidence notes

Evidence from the NVD and Chromium security team indicates that this vulnerability was exploited in the wild.

Official resources

CVE-2026-11658 CVE record
CVE.org
CVE-2026-11658 NVD detail
NVD
Source item URL
nvd_modified
Mitigation or vendor reference
[email protected] - Release Notes, Vendor Advisory
Source reference
[email protected] - Permissions Required

CVE-2026-11658 was published on 2026-06-09T00:16:48.810Z and modified on 2026-06-10T18:30:47.863Z.