Bug 2530265 (CVE-2026-87531)

Summary: CVE-2026-87531 chromium-browser: Chromium: Information disclosure in CORS 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: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in chromium-browser. A remote attacker, after compromising the renderer process, could exploit an information leak in Cross-Origin Resource Sharing (CORS) by using a specially crafted HTML page. This vulnerability allows the attacker to obtain sensitive data from other origins, leading to unauthorized information disclosure.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2542201, 2542202, 2542206    
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Description OSIDB Bzimport 2026-09-09 01:02:07 UTC
Information leak in CORS in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium)