Bug 2543386 (CVE-2026-95375)

Summary: CVE-2026-95375 chromium-browser: chromium-browser: Web origin policy bypass via crafted HTML page
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in chromium-browser. An incorrect authorization issue in the BrowserTag component allows a remote attacker who has compromised a renderer process to bypass the web origin policy via a crafted HTML page. This allows the attacker to circumvent the security boundary that isolates data between different websites, potentially accessing sensitive cross-origin information.
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Description OSIDB Bzimport 2026-09-29 17:54:11 UTC
Incorrect authorization in BrowserTag in Google Chrome prior to 154.0.8037.57 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)