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      <title>CVE-2025-27553 — Apache Commons VFS: Possible path traversal issue when using NameScope.DESCENDENT</title>
      <link>https://vulnerability.circl.lu/vuln/cve-2025-27553</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Apache Software Foundation Apache Commons VFS&lt;/p&gt;
&lt;p&gt;Relative Path Traversal vulnerability in Apache Commons VFS before 2.10.0.&lt;/p&gt;
&lt;p&gt;The FileObject API in Commons VFS has a &amp;#39;resolveFile&amp;#39; method that
takes a &amp;#39;scope&amp;#39; parameter. Specifying &amp;#39;NameScope.DESCENDENT&amp;#39; promises that &amp;#34;an exception is thrown if the resolved file is not a descendent of
the base file&amp;#34;. However, when the path contains encoded &amp;#34;..&amp;#34;
characters (for example, &amp;#34;%2E%2E/bar.txt&amp;#34;), it might return file objects that are not
a descendent of the base file, without throwing an exception.
This issue affects Apache Commons VFS: before 2.10.0.&lt;/p&gt;
&lt;p&gt;Users are recommended to upgrade to version 2.10.0, which fixes the issue.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Apache Software Foundation Apache Commons VFS&lt;/p&gt;
&lt;p&gt;Relative Path Traversal vulnerability in Apache Commons VFS before 2.10.0.&lt;/p&gt;
&lt;p&gt;The FileObject API in Commons VFS has a &amp;#39;resolveFile&amp;#39; method that
takes a &amp;#39;scope&amp;#39; parameter. Specifying &amp;#39;NameScope.DESCENDENT&amp;#39; promises that &amp;#34;an exception is thrown if the resolved file is not a descendent of
the base file&amp;#34;. However, when the path contains encoded &amp;#34;..&amp;#34;
characters (for example, &amp;#34;%2E%2E/bar.txt&amp;#34;), it might return file objects that are not
a descendent of the base file, without throwing an exception.
This issue affects Apache Commons VFS: before 2.10.0.&lt;/p&gt;
&lt;p&gt;Users are recommended to upgrade to version 2.10.0, which fixes the issue.&lt;/p&gt;</content:encoded>
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