Bug 2530455 (CVE-2026-87442)

Summary: CVE-2026-87442 chromium-browser: Google Chrome Prerender: Web Origin Policy Bypass
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Prerender in Google Chrome. A remote attacker who has compromised the renderer process could exploit a confused deputy vulnerability by crafting a malicious HTML page. This could potentially allow them to bypass the web origin policy, which is a fundamental security mechanism that restricts how a document or script loaded from one origin can interact with a resource from another origin. The primary consequence is unauthorized access to data 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 01:15:27 UTC 
Confused deputy in Prerender in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to potentially bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)