Origin-policy bypass via Actor authorization failure
Published Sep 1, 2026 · Updated Sep 2, 2026
Incorrect authorization in Google Chrome before 152.0.7977.75 allows remote attackers to bypass web origin policy via crafted HTML. The Actor component performs an incorrect authorization check, but Google has not disclosed the affected operation or patch details. Exploitation requires user interaction with the page and prior compromise of the renderer process; the documented consequence is cross-origin data exposure.
Summary
What happened
Incorrect authorization in Google Chrome before 152.0.7977.75 allows remote attackers to bypass web origin policy via crafted HTML. The Actor component performs an incorrect authorization check, but Google has not disclosed the affected operation or patch details. Exploitation requires user interaction with the page and prior compromise of the renderer process; the documented consequence is cross-origin data exposure.
The record
- CVE
- CVE-2026-84331
- Published
- Sep 1, 2026
- Updated
- Sep 2, 2026
- Vendor
- Google Cloud
- Product
- Google Chrome
- Classifications
- CWE-863, T1185
- 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
Compare your product and version with the public record. A matching version still requires validation against your environment.
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
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
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo