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    2 vulnerabilities by Cinnamon AI

    CVE-2026-86867 (GCVE-0-2026-86867)

    Vulnerability from nvd – Published: 2026-09-23 17:44 – Updated: 2026-09-24 14:37
    VLAI
    Title
    Cinnamon's kotaemon contains improper authorization checks in multi‑user chat handlers
    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.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-24 14:37 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Cinnamon AI Kotaemon Affected: 0.12.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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    CVE-2026-86867 (GCVE-0-2026-86867)

    Vulnerability from cvelistv5 – Published: 2026-09-23 17:44 – Updated: 2026-09-24 14:37
    VLAI
    Title
    Cinnamon's kotaemon contains improper authorization checks in multi‑user chat handlers
    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.
    Severity
    6.5 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator · CISA-ADP (v2.0.3)
    Decision recorded 2026-09-24 14:37 UTC
    CWE
    Assigner
    References
    Impacted products
    Vendor Product Version
    Cinnamon AI Kotaemon Affected: 0.12.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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