Bug 2530332 (CVE-2026-87466)

Summary: CVE-2026-87466 chromium-browser: Chromium: Web origin policy bypass via crafted HTML page
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in Chromium. Incorrect authorization within the Workers component allows a remote attacker to bypass the web origin policy. This can be achieved by enticing a user to visit a specially crafted HTML page, potentially leading to unauthorized access to sensitive information or actions across different web origins.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2542199, 2542200    
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Description OSIDB Bzimport 2026-09-09 01:06:29 UTC
Incorrect authorization in Workers in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)