Bug 2538195 (CVE-2026-93378)

Summary: CVE-2026-93378 chromium-browser: Google Chrome: Site Isolation bypass via a crafted PDF file
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 had compromised the renderer process could exploit missing authorization in the Storage component via a crafted PDF file. This could allow them to bypass site isolation, potentially leading to unauthorized access to data or further system compromise.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2542236, 2542237    
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Description OSIDB Bzimport 2026-09-22 17:24:54 UTC
Missing authorization in Storage in Google Chrome prior to 153.0.8010.52 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chromium security severity: Medium)