Bug 2523880 (CVE-2026-78951)

Summary: CVE-2026-78951 chromium-browser: Chromium: Arbitrary code execution via use-after-free in ServiceWorker
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: urgent Docs Contact:
Priority: urgent    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in the ServiceWorker component of Chromium. A remote attacker could exploit a use-after-free vulnerability by enticing a user to visit a specially crafted HTML page. This could lead to arbitrary code execution outside of the browser's security sandbox.
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: 2524890, 2524891    
Bug Blocks:    

Description OSIDB Bzimport 2026-08-25 20:46:56 UTC
Use after free in ServiceWorker in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)