PatchSiren cyber security CVE debrief

CVE-2026-11206 Google CVE debrief

CVE-2026-11206 is a Medium severity vulnerability in Google Chrome prior to version 149.0.7827.53. The vulnerability is caused by insufficient policy enforcement in ServiceWorker, which allows a remote attacker to leak cross-origin data via a crafted HTML page.

Vendor: Google
Product: Chrome
CVSS: MEDIUM 6.5
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-06-04
Original CVE updated: 2026-07-23
Advisory published: 2026-06-04
Advisory updated: 2026-07-23

Who should care

Users of Google Chrome prior to version 149.0.7827.53

Technical summary

The vulnerability has a CVSS score of 6.5 and is classified as CWE-693. The affected product is Google Chrome, with a CPE criteria of cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*

Defensive priority

Medium

Recommended defensive actions

Update Google Chrome to version 149.0.7827.53 or later

Evidence notes

The CVE record was obtained from the official CVE.org website [cve-org]. Additional details were obtained from the NVD detail page [nvd] and the source item URL [source-item].

Sources and references

Verified primary and authoritative sources

CVE-2026-11206 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-11206

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-11206 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-11206

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.html

[email protected] - Vendor Advisory
Source reference
Unverified legacy reference

URL: https://issues.chromium.org/issues/505427216

[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.