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  <updated>2026-09-30T02:36:59.822617+00:00</updated>
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    <id>https://vulnerability.circl.lu/vuln/fkie_cve-2026-86867</id>
    <title>fkie_cve-2026-86867</title>
    <updated>2026-09-30T02:36:59.826415+00:00</updated>
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        <p>Cinnamon's Kotaemon (all versions up to and including v0.12.0) multi-user chat interface contains multiple vulnerabilities due to incorrect authorization and improper access controls. There are four handler methods in `libs/ktem/ktem/pages/chat/control.py` that load a Conversation record by its ID without comparing the requester's `user_id` to the conversation's owner `Conversation.user`. This allows any authenticated user to perform the following actions:
1. Read other user's chat transcripts, RAG retrieval history, AI-generated plots, and chat suggestions.
2. Permanently delete another user's conversation.
3. Rename another user's conversation.
4. Overwrite another user's conversation's chat suggestion list.</p>
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    <link href="https://vulnerability.circl.lu/vuln/fkie_cve-2026-86867"/>
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  <entry>
    <id>https://vulnerability.circl.lu/vuln/ghsa-xj3r-7j9q-cqf2</id>
    <title>GHSA-xj3r-7j9q-cqf2</title>
    <updated>2026-09-30T02:36:59.826532+00:00</updated>
    <content type="xhtml">
      <div xmlns="http://www.w3.org/1999/xhtml">
        <p>Cinnamon's Kotaemon (all versions up to and including v0.12.0) multi-user chat interface contains multiple vulnerabilities due to incorrect authorization and improper access controls. There are four handler methods in `libs/ktem/ktem/pages/chat/control.py` that load a Conversation record by its ID without comparing the requester's `user_id` to the conversation's owner `Conversation.user`. This allows any authenticated user to perform the following actions:
1. Read other user's chat transcripts, RAG retrieval history, AI-generated plots, and chat suggestions.
2. Permanently delete another user's conversation.
3. Rename another user's conversation.
4. Overwrite another user's conversation's chat suggestion list.</p>
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    <link href="https://vulnerability.circl.lu/vuln/ghsa-xj3r-7j9q-cqf2"/>
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