Access-control bypass via malicious extension installation
Published Jun 4, 2026 · Updated Jun 4, 2026
Access-control bypass in Google Chrome before 149.0.7827.53 allows attackers to exceed extension permissions through a crafted extension. Google identifies insufficient policy enforcement in the Extensions component but has not published the specific check or operation that mishandles the crafted extension. Exploitation requires a user to install the malicious extension; the published assessment reports integrity impact without data disclosure or service interruption.
Summary
What happened
Access-control bypass in Google Chrome before 149.0.7827.53 allows attackers to exceed extension permissions through a crafted extension. Google identifies insufficient policy enforcement in the Extensions component but has not published the specific check or operation that mishandles the crafted extension. Exploitation requires a user to install the malicious extension; the published assessment reports integrity impact without data disclosure or service interruption.
The record
- CVE
- CVE-2026-11190
- Published
- Jun 4, 2026
- Updated
- Jun 4, 2026
- Vendor
- Go standard library
- Product
- Google Chrome
- Classifications
- CWE-284, T1176.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 4, 2026CVE publishedPublication date reported by the CVE source.
- Jun 4, 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.
- Affected versionversion=149.0.7827.53 <149.0.7827.53
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
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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