Bug 2534664 (CVE-2026-91748)

Summary: CVE-2026-91748 chromium-browser: chromium-browser: Race condition in Extensions
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 race condition flaw was found in the Extensions component of the Chromium browser. Upstream bug(s): https://code.google.com/p/chromium/issues/detail?id=521559611
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Bug Depends On: 2535921, 2535925    
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Description OSIDB Bzimport 2026-09-15 22:31:52 UTC
Race condition in Extensions in Google Chrome on on Mac prior to 153.0.8010.47 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to potentially execute arbitrary code outside the sandbox via UI Interaction. (Chromium security severity: High)