CVE-2026-86867 (GCVE-0-2026-86867)
Vulnerability from cvelistv5
Published
2026-09-23 17:44
Modified
2026-09-24 14:37
Summary
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.
Impacted products
Vendor Product Version
Cinnamon AI Kotaemon Version: 0.12.0
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Show details on NVD website


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