Bug 2556866 (CVE-2026-113239)

Summary: CVE-2026-113239 chromium-browser: chromium-browser: arbitrary code execution within sandbox 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: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in chromium-browser. This vulnerability allows a remote attacker to achieve arbitrary code execution within the browser's restricted sandbox environment by enticing a user to visit a specially crafted HTML page. The issue stems from a range validation error in the SiteIsolation component.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2558579    
Bug Blocks:    

Description OSIDB Bzimport 2026-10-20 22:49:11 UTC
Range error in SiteIsolation in Google Chrome on on Android prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)