Bug 2488060 (CVE-2026-12034)

Summary: CVE-2026-12034 chromium-browser: chromium-browser: Insufficient validation of untrusted input  Linux Toolkit Theming
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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The following flaw was identified in the Chromium browser: Insufficient validation of untrusted input  Linux Toolkit Theming. Upstream bug(s): https://code.google.com/p/chromium/issues/detail?id=519258799
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Bug Depends On: 2491264, 2491265    
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Description OSIDB Bzimport 2026-06-11 22:01:33 UTC
Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)