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      <title>CVE-2026-40304 — zrok's broken ownership check in DELETE /api/v2/unaccess allows non-admin to delete global frontend records</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-40304</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; openziti zrok&lt;/p&gt;
&lt;p&gt;zrok is software for sharing web services, files, and network resources. Prior to version 2.0.1, the unaccess handler (controller/unaccess.go) contains a logical error in its ownership guard: when a frontend record has environment_id = NULL (the marker for admin-created global frontends), the condition short-circuits to false and allows the deletion to proceed without any ownership verification. A non-admin user who knows a global frontend token can call DELETE /api/v2/unaccess with any of their own environment IDs and permanently delete the global frontend, taking down all public shares routed through it. Version 2.0.1 patches the issue.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; openziti zrok&lt;/p&gt;
&lt;p&gt;zrok is software for sharing web services, files, and network resources. Prior to version 2.0.1, the unaccess handler (controller/unaccess.go) contains a logical error in its ownership guard: when a frontend record has environment_id = NULL (the marker for admin-created global frontends), the condition short-circuits to false and allows the deletion to proceed without any ownership verification. A non-admin user who knows a global frontend token can call DELETE /api/v2/unaccess with any of their own environment IDs and permanently delete the global frontend, taking down all public shares routed through it. Version 2.0.1 patches the issue.&lt;/p&gt;</content:encoded>
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