Bug 2530420 (CVE-2026-87543)

Summary: CVE-2026-87543 chromium-browser: Google Chrome: Site isolation bypass via missing authorization
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Google Chrome. A remote attacker who has compromised the renderer process can exploit a missing authorization vulnerability by crafting a malicious HTML page. This allows them to bypass site isolation, which is a security mechanism designed to protect user data and prevent malicious websites from accessing information from other sites.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2542201, 2542202, 2542206    
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Description OSIDB Bzimport 2026-09-09 01:13:31 UTC 
Missing authorization in Core in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Low)