Incorrect authorization in WebAppInstalls in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process… (CVE-2026-87580)
An incorrect authorization vulnerability exists in the WebAppInstalls component of Google Chrome versions prior to 153.0.8010.36. This flaw allows a remote attacker who has already compromised the renderer process and used social engineering to bypass site isolation protections via a crafted HTML page. The vulnerability is classified with medium severity by Chromium security. No public exploits or patches are currently documented.
AI Analysis
Technical Summary
CVE-2026-87580 is an authorization bypass vulnerability in the WebAppInstalls feature of Google Chrome before version 153.0.8010.36. It enables a remote attacker, after compromising the renderer process and employing social engineering, to circumvent site isolation mechanisms using a specially crafted HTML page. This vulnerability is related to CWE-863 (Incorrect Authorization). There is no CVSS score or vendor patch information available at this time.
Potential Impact
The vulnerability allows an attacker who has already compromised the renderer process to bypass site isolation protections, potentially increasing the scope of compromise within the browser environment. This could lead to unauthorized access to data or functionality normally isolated by site isolation, but exploitation requires prior renderer compromise and social engineering.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should exercise caution with untrusted content and avoid social engineering attacks that could lead to renderer compromise. Monitor official Google Chrome security advisories for updates.
Incorrect authorization in WebAppInstalls in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process… (CVE-2026-87580)
Description
An incorrect authorization vulnerability exists in the WebAppInstalls component of Google Chrome versions prior to 153.0.8010.36. This flaw allows a remote attacker who has already compromised the renderer process and used social engineering to bypass site isolation protections via a crafted HTML page. The vulnerability is classified with medium severity by Chromium security. No public exploits or patches are currently documented.
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-2026-87580 is an authorization bypass vulnerability in the WebAppInstalls feature of Google Chrome before version 153.0.8010.36. It enables a remote attacker, after compromising the renderer process and employing social engineering, to circumvent site isolation mechanisms using a specially crafted HTML page. This vulnerability is related to CWE-863 (Incorrect Authorization). There is no CVSS score or vendor patch information available at this time.
Potential Impact
The vulnerability allows an attacker who has already compromised the renderer process to bypass site isolation protections, potentially increasing the scope of compromise within the browser environment. This could lead to unauthorized access to data or functionality normally isolated by site isolation, but exploitation requires prior renderer compromise and social engineering.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should exercise caution with untrusted content and avoid social engineering attacks that could lead to renderer compromise. Monitor official Google Chrome security advisories for updates.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-7hf9-x738-qv7h
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-87580"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6aa15f91acd9273b49618aef
Added to database: 09/09/2026, 13:30:57 UTC
Last enriched: 09/09/2026, 14:09:10 UTC
Last updated: 09/09/2026, 18:52:00 UTC
Views: 2
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