Bug 2572012 (CVE-2026-126883)

Summary: CVE-2026-126883 chromium-browser: chromium-browser: Arbitrary code execution via use-after-free in Core
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 the Core component of Chromium. This issue stems from a use-after-free (UAF) memory corruption vulnerability, where the program attempts to access memory after it has been released. A remote attacker who has compromised the browser renderer process could exploit this flaw via a crafted HTML page to escape the sandbox and execute arbitrary code on the host system.
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Bug Depends On: 2572197, 2572198    
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Description OSIDB Bzimport 2026-11-11 22:54:49 UTC
Use after free in Core in Google Chrome on on Windows prior to 157.0.8103.78 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)