Origin-policy bypass via Omnibox input validation
Published Sep 1, 2026 · Updated Sep 2, 2026
Improper input validation in Google Chrome's Omnibox before 152.0.7977.75 allows remote attackers to bypass web origin policy. Google has not published which Omnibox input is accepted incorrectly or how that input defeats the origin check. Exploitation requires social engineering and crafted network traffic; the published impact is limited to bypassing origin separation.
Summary
What happened
Improper input validation in Google Chrome's Omnibox before 152.0.7977.75 allows remote attackers to bypass web origin policy. Google has not published which Omnibox input is accepted incorrectly or how that input defeats the origin check. Exploitation requires social engineering and crafted network traffic; the published impact is limited to bypassing origin separation.
The record
- CVE
- CVE-2026-84357
- Published
- Sep 1, 2026
- Updated
- Sep 2, 2026
- Vendor
- Google Cloud
- Product
- Google Chrome
- Classifications
- CWE-20, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 1, 2026CVE publishedPublication date reported by the CVE source.
- Sep 2, 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=152.0.7977.75 <152.0.7977.75
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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Attacks
What attackers are doing with it
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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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