CVE-2026-11684Network attack vector

Cross-origin data disclosure via network policy bypass

Published Jun 8, 2026 · Updated Jun 8, 2026

Insufficient policy enforcement in Google Chrome before 149.0.7827.103 allows remote attackers to leak cross-origin data via crafted HTML. The Network component fails to enforce cross-origin access policy after the browser utility process has been compromised; Google has not disclosed the responsible code path. Exploitation requires user interaction with crafted HTML and prior utility-process compromise, and the reported consequence is data disclosure without integrity or availability impact.

CVSS severity3.1
Low
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insufficient policy enforcement in Google Chrome before 149.0.7827.103 allows remote attackers to leak cross-origin data via crafted HTML. The Network component fails to enforce cross-origin access policy after the browser utility process has been compromised; Google has not disclosed the responsible code path. Exploitation requires user interaction with crafted HTML and prior utility-process compromise, and the reported consequence is data disclosure without integrity or availability impact.

The record

CVE
CVE-2026-11684
Published
Jun 8, 2026
Updated
Jun 8, 2026
Vendor
Go standard library
Product
Google Chrome
Classifications
CWE-693
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=149.0.7827.103 <149.0.7827.103

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Go standard library · Google Chromeversion=149.0.7827.103 <149.0.7827.103

Published CVSS scores

3.1CISA-ADPCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-693Protection Mechanism Failure

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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