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      <title>CVE-2026-11423 — Path Traversal in Altium Enterprise Server Collaboration Service Allows Privilege Escalation</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-11423</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Altium Enterprise Server&lt;/p&gt;
&lt;p&gt;A path traversal vulnerability exists in the Altium Enterprise Server Collaboration Service due to improper handling of user-supplied filenames in the MCAD and Simulation file download flows. A regular authenticated user can submit a collaboration message containing a crafted filename, which is later used to construct the download path on the server without validation, allowing arbitrary files to be read from the server filesystem.&lt;/p&gt;
&lt;p&gt;Because the readable files include the server&amp;#39;s master configuration, which stores credentials for privileged accounts, exploitation can lead to authenticating as a system administrator and gaining full control of the server. Altium 365 cloud deployments are not affected.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Altium Enterprise Server&lt;/p&gt;
&lt;p&gt;A path traversal vulnerability exists in the Altium Enterprise Server Collaboration Service due to improper handling of user-supplied filenames in the MCAD and Simulation file download flows. A regular authenticated user can submit a collaboration message containing a crafted filename, which is later used to construct the download path on the server without validation, allowing arbitrary files to be read from the server filesystem.&lt;/p&gt;
&lt;p&gt;Because the readable files include the server&amp;#39;s master configuration, which stores credentials for privileged accounts, exploitation can lead to authenticating as a system administrator and gaining full control of the server. Altium 365 cloud deployments are not affected.&lt;/p&gt;</content:encoded>
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