Bug 2530351 (CVE-2026-87577)

Summary: CVE-2026-87577 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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Hardware: All   
OS: Linux   
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A flaw was found in Chromium. A remote attacker could exploit an authorization vulnerability by creating a specially designed web page. This could allow the attacker to bypass security restrictions, known as the web origin policy, and access sensitive information or functionality on a privileged page.
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Bug Depends On: 2542201, 2542202, 2542206    
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Description OSIDB Bzimport 2026-09-09 01:08:11 UTC
Incorrect authorization in Isolated in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy into a privileged page via a crafted HTML page. (Chromium security severity: Medium)