Bug 2530452 (CVE-2026-87553)

Summary: CVE-2026-87553 chromium-browser: Google Chrome SiteIsolation: Arbitrary code execution outside sandbox 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: 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 SiteIsolation in Google Chrome. Improper input validation could allow a remote attacker, who has already compromised the renderer process, to execute arbitrary code outside of the sandbox. This exploitation occurs when the attacker provides a specially crafted HTML page, leading to a bypass of security boundaries.
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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 01:15:18 UTC 
Improper input validation in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)