Missing authorization in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to… (CVE-2026-87606)
A missing authorization vulnerability in the SiteIsolation feature of Google Chrome prior to version 153.0.8010.36 allows a remote attacker who has already compromised the renderer process to bypass site isolation protections using a crafted HTML page. This vulnerability is classified with medium severity by Chromium security. No CVSS score or known exploits in the wild are reported. No patch information is currently available.
AI Analysis
Technical Summary
CVE-2026-87606 describes a missing authorization flaw in Google Chrome's SiteIsolation mechanism before version 153.0.8010.36. This flaw enables a remote attacker, who has compromised the renderer process, to bypass site isolation by leveraging a specially crafted HTML page. SiteIsolation is a security feature designed to isolate different websites into separate processes to prevent cross-site data leaks. The vulnerability is categorized under CWE-862 (Missing Authorization). There is no CVSS score or vendor patch information provided in the available data.
Potential Impact
An attacker who has already compromised the renderer process can bypass site isolation protections, potentially allowing unauthorized access to data or actions across site boundaries within the browser. The Chromium security team rates this vulnerability as medium severity. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should be cautious about untrusted content and consider limiting exposure to potentially malicious web pages. Monitor official Google Chrome security advisories for updates and patches addressing this issue.
Missing authorization in SiteIsolation in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to… (CVE-2026-87606)
Description
A missing authorization vulnerability in the SiteIsolation feature of Google Chrome prior to version 153.0.8010.36 allows a remote attacker who has already compromised the renderer process to bypass site isolation protections using a crafted HTML page. This vulnerability is classified with medium severity by Chromium security. No CVSS score or known exploits in the wild are reported. No patch information is currently available.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-87606 describes a missing authorization flaw in Google Chrome's SiteIsolation mechanism before version 153.0.8010.36. This flaw enables a remote attacker, who has compromised the renderer process, to bypass site isolation by leveraging a specially crafted HTML page. SiteIsolation is a security feature designed to isolate different websites into separate processes to prevent cross-site data leaks. The vulnerability is categorized under CWE-862 (Missing Authorization). There is no CVSS score or vendor patch information provided in the available data.
Potential Impact
An attacker who has already compromised the renderer process can bypass site isolation protections, potentially allowing unauthorized access to data or actions across site boundaries within the browser. The Chromium security team rates this vulnerability as medium severity. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should be cautious about untrusted content and consider limiting exposure to potentially malicious web pages. Monitor official Google Chrome security advisories for updates and patches addressing this issue.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-3jp9-5jfr-h82p
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-87606"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6aa15f91acd9273b49618aa9
Added to database: 09/09/2026, 13:30:57 UTC
Last enriched: 09/09/2026, 14:07:07 UTC
Last updated: 09/09/2026, 21:52:00 UTC
Views: 2
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