Incorrect authorization in Extensions in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass system access restrictions via a… (CVE-2026-87591)
An incorrect authorization vulnerability exists in the Extensions component of Google Chrome versions prior to 153.0.8010.36. This flaw allows a remote attacker to bypass system access restrictions by using a specially crafted Chrome extension. The issue is classified with medium severity by Chromium security. No CVSS score or exploit in the wild has been reported yet.
AI Analysis
Technical Summary
CVE-2026-87591 is an authorization bypass vulnerability in Google Chrome Extensions before version 153.0.8010.36. The vulnerability allows a remote attacker to circumvent system access controls by leveraging a crafted Chrome extension. This is categorized under CWE-863 (Incorrect Authorization). No detailed exploitation techniques or impact beyond bypassing system access restrictions are provided.
Potential Impact
A remote attacker could bypass system access restrictions, potentially gaining unauthorized capabilities within the Chrome environment via a malicious extension. The exact scope of impact beyond bypassing these restrictions is not detailed. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available in Google Chrome version 153.0.8010.36 and later. Users and administrators should update to this version or later to remediate the vulnerability. Since this is not a cloud service, patching the client software is required. Patch status is not explicitly confirmed in vendor advisories here, so verify with official Google Chrome security bulletins for confirmation.
Incorrect authorization in Extensions in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass system access restrictions via a… (CVE-2026-87591)
Description
An incorrect authorization vulnerability exists in the Extensions component of Google Chrome versions prior to 153.0.8010.36. This flaw allows a remote attacker to bypass system access restrictions by using a specially crafted Chrome extension. The issue is classified with medium severity by Chromium security. No CVSS score or exploit in the wild has been reported yet.
Affected software
pkg:github/chromium/chromiumRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-87591 is an authorization bypass vulnerability in Google Chrome Extensions before version 153.0.8010.36. The vulnerability allows a remote attacker to circumvent system access controls by leveraging a crafted Chrome extension. This is categorized under CWE-863 (Incorrect Authorization). No detailed exploitation techniques or impact beyond bypassing system access restrictions are provided.
Potential Impact
A remote attacker could bypass system access restrictions, potentially gaining unauthorized capabilities within the Chrome environment via a malicious extension. The exact scope of impact beyond bypassing these restrictions is not detailed. No known exploits in the wild have been reported.
Mitigation Recommendations
A fix is available in Google Chrome version 153.0.8010.36 and later. Users and administrators should update to this version or later to remediate the vulnerability. Since this is not a cloud service, patching the client software is required. Patch status is not explicitly confirmed in vendor advisories here, so verify with official Google Chrome security bulletins for confirmation.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-5jfr-9xvq-fx78
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-87591"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6aa15f91acd9273b49618b17
Added to database: 09/09/2026, 13:30:57 UTC
Last enriched: 09/09/2026, 14:09:39 UTC
Last updated: 09/09/2026, 19:51:59 UTC
Views: 2
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