Bug 2523959 (CVE-2026-79255)

Summary: CVE-2026-79255 chromium-browser: Chromium WebRTC: Web origin policy bypass via improper input validation
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 WebRTC, a real-time communication component within Chromium. This improper input validation vulnerability allows a remote attacker, who has already compromised the renderer process, to bypass the web origin policy. This bypass can be achieved by tricking the user into visiting a specially crafted HTML page, potentially leading to unauthorized access to sensitive information 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: 2524926, 2540923    
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Description OSIDB Bzimport 2026-08-25 20:52:14 UTC 
Improper input validation in WebRTC in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)