Cross-origin data disclosure from compromised renderer
Published Jun 30, 2026 · Updated Jun 30, 2026
Insufficient policy enforcement in Chrome Extensions before 150.0.7871.47 allows remote attackers to leak cross-origin data via crafted HTML. Google has not published which Extensions policy check fails or how crafted content bypasses it. Exploitation requires prior renderer compromise and user interaction with crafted HTML; the reported consequence is cross-origin data disclosure.
Summary
What happened
Insufficient policy enforcement in Chrome Extensions before 150.0.7871.47 allows remote attackers to leak cross-origin data via crafted HTML. Google has not published which Extensions policy check fails or how crafted content bypasses it. Exploitation requires prior renderer compromise and user interaction with crafted HTML; the reported consequence is cross-origin data disclosure.
The record
- CVE
- CVE-2026-14053
- Published
- Jun 30, 2026
- Updated
- Jun 30, 2026
- Vendor
- Go standard library
- Product
- Google Chrome
- Classifications
- CWE-346, T1185
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 30, 2026CVE publishedPublication date reported by the CVE source.
- Jun 30, 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=150.0.7871.47 <150.0.7871.47
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.
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Technologies
Your stack
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Your stack
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