Bug 2523920 (CVE-2026-79078)

Summary: CVE-2026-79078 chromium-browser: Google Chrome FedCM: Arbitrary Code Execution Vulnerability
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: urgent Docs Contact:
Priority: urgent    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Federated Credential Management (FedCM) component of Google Chrome. This vulnerability, known as a use-after-free, allows a remote attacker to execute unauthorized code outside of the browser's security protections. By leveraging social engineering tactics and a specially crafted HTML page, an attacker could potentially gain full control over the affected system.
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Bug Depends On: 2524890, 2524891    
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Description OSIDB Bzimport 2026-08-25 20:49:31 UTC
Use after free in FedCM in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)