Bug 2512308 (CVE-2026-19153)

Summary: CVE-2026-19153 chromium-browser: Google Chrome: Site isolation bypass via insufficient input validation in Workers
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
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 Google Chrome. Insufficient validation of untrusted input in the Workers component could allow a remote attacker, who has already compromised the renderer process, to bypass site isolation. This could enable the attacker to access sensitive information or further compromise the user's system.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2514646, 2514647    
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Description OSIDB Bzimport 2026-08-06 22:28:39 UTC 
Insufficient validation of untrusted input in Workers in Google Chrome prior to 151.0.7922.109 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)