Bug 2524023 (CVE-2026-78943)

Summary: CVE-2026-78943 chromium-browser: Google Chrome: Remote attacker can bypass web origin policy
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 Google Chrome. This improper input validation vulnerability in the Editing component could allow a remote attacker, who has already compromised the renderer process and used social engineering, to bypass the web origin policy. This bypass is achieved by tricking a user into interacting with a specially crafted HTML page, potentially leading to unauthorized access to sensitive information or other cross-origin attacks.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2524890, 2524891    
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Description OSIDB Bzimport 2026-08-25 20:58:17 UTC 
Improper input validation in Editing in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)