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    <link>https://cve.radiocsirt.org</link>
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      <title>BREW-jupyterlab-CVE-2026-5422 — Jupyter Server vulnerable to Path Traversal via incorrect root directory boundary check in _get_os_path()</title>
      <link>https://cve.radiocsirt.org/vuln/brew-jupyterlab-cve-2026-5422</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Homebrew: jupyterlab&lt;/p&gt;
&lt;p&gt;A path traversal vulnerability exists in jupyter-server version 2.17.0 due to an incorrect root directory boundary check in the _get_os_path() function within jupyter_server/services/contents/fileio.py. The check uses startswith(root) without appending a trailing path separator, allowing sibling directories with names starting with the same prefix as root_dir to bypass the check. Additionally, the to_os_path() function in utils.py does not strip &amp;#34;..&amp;#34; from path parts, enabling traversal sequences to bypass the vulnerable check. This vulnerability can lead to unauthorized read/write access to files in sibling directories, potentially exposing sensitive data in shared hosting environments.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; Homebrew: jupyterlab&lt;/p&gt;
&lt;p&gt;A path traversal vulnerability exists in jupyter-server version 2.17.0 due to an incorrect root directory boundary check in the _get_os_path() function within jupyter_server/services/contents/fileio.py. The check uses startswith(root) without appending a trailing path separator, allowing sibling directories with names starting with the same prefix as root_dir to bypass the check. Additionally, the to_os_path() function in utils.py does not strip &amp;#34;..&amp;#34; from path parts, enabling traversal sequences to bypass the vulnerable check. This vulnerability can lead to unauthorized read/write access to files in sibling directories, potentially exposing sensitive data in shared hosting environments.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://cve.radiocsirt.org/vuln/brew-jupyterlab-cve-2026-5422</guid>
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    <item>
      <title>CVE-2026-5422 — Path Traversal in jupyter/jupyter</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-5422</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; jupyter/jupyter&lt;/p&gt;
&lt;p&gt;A path traversal vulnerability exists in jupyter-server version 2.17.0 due to an incorrect root directory boundary check in the _get_os_path() function within jupyter_server/services/contents/fileio.py. The check uses startswith(root) without appending a trailing path separator, allowing sibling directories with names starting with the same prefix as root_dir to bypass the check. Additionally, the to_os_path() function in utils.py does not strip &amp;#34;..&amp;#34; from path parts, enabling traversal sequences to bypass the vulnerable check. This vulnerability can lead to unauthorized read/write access to files in sibling directories, potentially exposing sensitive data in shared hosting environments.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; jupyter/jupyter&lt;/p&gt;
&lt;p&gt;A path traversal vulnerability exists in jupyter-server version 2.17.0 due to an incorrect root directory boundary check in the _get_os_path() function within jupyter_server/services/contents/fileio.py. The check uses startswith(root) without appending a trailing path separator, allowing sibling directories with names starting with the same prefix as root_dir to bypass the check. Additionally, the to_os_path() function in utils.py does not strip &amp;#34;..&amp;#34; from path parts, enabling traversal sequences to bypass the vulnerable check. This vulnerability can lead to unauthorized read/write access to files in sibling directories, potentially exposing sensitive data in shared hosting environments.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://cve.radiocsirt.org/vuln/cve-2026-5422</guid>
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      <title>Withdrawn: GHSA-gf7q-q4j7-hp7c — Duplicate Advisory: Jupyter Server vulnerable to Path Traversal via incorrect root directory boundary check in _get_os_…</title>
      <link>https://cve.radiocsirt.org/vuln/ghsa-gf7q-q4j7-hp7c</link>
      <description>&lt;p&gt;&lt;strong&gt;Withdrawn by the publisher.&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; PyPI: jupyter-server&lt;/p&gt;
&lt;p&gt;### Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-5789-5fc7-67v3. This link is maintained to preserve external references.&lt;/p&gt;
&lt;p&gt;### Original Description
A path traversal vulnerability exists in jupyter-server version 2.17.0 due to an incorrect root directory boundary check in the _get_os_path() function within jupyter_server/services/contents/fileio.py. The check uses startswith(root) without appending a trailing path separator, allowing sibling directories with names starting with the same prefix as root_dir to bypass the check. Additionally, the to_os_path() function in utils.py does not strip &amp;#34;..&amp;#34; from path parts, enabling traversal sequences to bypass the vulnerable check. This vulnerability can lead to unauthorized read/write access to files in sibling directories, potentially exposing sensitive data in shared hosting environments.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Withdrawn by the publisher.&lt;/strong&gt;&lt;/p&gt;
&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; PyPI: jupyter-server&lt;/p&gt;
&lt;p&gt;### Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-5789-5fc7-67v3. This link is maintained to preserve external references.&lt;/p&gt;
&lt;p&gt;### Original Description
A path traversal vulnerability exists in jupyter-server version 2.17.0 due to an incorrect root directory boundary check in the _get_os_path() function within jupyter_server/services/contents/fileio.py. The check uses startswith(root) without appending a trailing path separator, allowing sibling directories with names starting with the same prefix as root_dir to bypass the check. Additionally, the to_os_path() function in utils.py does not strip &amp;#34;..&amp;#34; from path parts, enabling traversal sequences to bypass the vulnerable check. This vulnerability can lead to unauthorized read/write access to files in sibling directories, potentially exposing sensitive data in shared hosting environments.&lt;/p&gt;</content:encoded>
      <guid isPermaLink="false">https://cve.radiocsirt.org/vuln/ghsa-gf7q-q4j7-hp7c</guid>
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