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    <lastBuildDate>Mon, 28 Sep 2026 12:35:22 +0000</lastBuildDate>
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      <title>CVE-2026-18640 — Velociraptor directory traversal via the NewNotebook API</title>
      <link>https://db.gcve.eu/vuln/cve-2026-18640</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Rapid7 Velociraptor&lt;/p&gt;
&lt;p&gt;The NewNotebook API does not sufficiently sanitize its parameters allowing an authenticated user with NOTEBOOK_EDIT permission to write the notebook record outside the org&amp;#39;s data store directory. The file written must have an extension of &amp;#34;.json.db&amp;#34; but can otherwise overwrite other metadata files (such as ACL records, hunts etc). This can corrupt these files and cause data corruption.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Rapid7 Velociraptor&lt;/p&gt;
&lt;p&gt;The NewNotebook API does not sufficiently sanitize its parameters allowing an authenticated user with NOTEBOOK_EDIT permission to write the notebook record outside the org&amp;#39;s data store directory. The file written must have an extension of &amp;#34;.json.db&amp;#34; but can otherwise overwrite other metadata files (such as ACL records, hunts etc). This can corrupt these files and cause data corruption.&lt;/p&gt;</content:encoded>
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