PatchSiren cyber security CVE debrief

CVE-2026-11643 Google CVE debrief

CVE-2026-11643 is a high-severity vulnerability in Google Chrome prior to version 149.0.7827.103. The vulnerability is caused by a use after free in the Proxy component, which could allow a remote attacker to execute arbitrary code via malicious network traffic. The Chromium security severity of this vulnerability is Critical, with a CVSS score of 8.1.

Vendor: Google
Product: Chrome
CVSS: HIGH 8.1
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 prior to version 149.0.7827.103 should update to the latest version to mitigate this vulnerability.

Technical summary

The vulnerability is caused by a use after free in the Proxy component of Google Chrome. This could allow a remote attacker to execute arbitrary code via malicious network traffic.

Defensive priority

High

Recommended defensive actions

Update Google Chrome to version 149.0.7827.103 or later.

Evidence notes

The CVE-2026-11643 vulnerability was published on [cve-org](https://www.cve.org/CVERecord?id=CVE-2026-11643) and has a detailed description on [nvd](https://nvd.nist.gov/vuln/detail/CVE-2026-11643).

Sources and references

Verified primary and authoritative sources

CVE-2026-11643 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-11643

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-11643 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11643

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Mitigation or vendor reference
Unverified legacy reference

URL: https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.html

[email protected] - Release Notes, Vendor Advisory
Source reference
Unverified legacy reference

URL: https://issues.chromium.org/issues/518006379

[email protected] - Permissions Required

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.