Bug 2530347 (CVE-2026-87606)

Summary: CVE-2026-87606 chromium-browser: Google Chrome: Site isolation bypass due to missing authorization
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
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in Google Chrome's SiteIsolation feature. A remote attacker, after compromising the renderer process, could exploit missing authorization to bypass site isolation by using a specially crafted HTML page. This could allow the attacker to access data or functionality that should be restricted.
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: 2542201, 2542202, 2542206    
Bug Blocks:    

Description OSIDB Bzimport 2026-09-09 01:07:59 UTC
Missing authorization in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)