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      <title>CVE-2026-63266 — Arbitrary file write via calcext:data-mappings, sql provider and Firebird backup functionality</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2026-63266</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; The Document Foundation LibreOffice&lt;/p&gt;
&lt;p&gt;LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. Through such a link a document could open an embedded Firebird database that wrote a file to any location the user could write to. In fixed versions an embedded Firebird database can open or create files only inside its own private directory.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; The Document Foundation LibreOffice&lt;/p&gt;
&lt;p&gt;LibreOffice Calc can link a cell range to an external data source, and the link is saved in the document. Through such a link a document could open an embedded Firebird database that wrote a file to any location the user could write to. In fixed versions an embedded Firebird database can open or create files only inside its own private directory.&lt;/p&gt;</content:encoded>
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