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.
Metrics
Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Thu, 24 Sep 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 24 Sep 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-200 CWE-639 CWE-862 |
|
| Metrics |
cvssV3_1
|
Thu, 24 Sep 2026 09:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Cinnamon
Cinnamon kotaemon |
|
| Vendors & Products |
Cinnamon
Cinnamon kotaemon |
Wed, 23 Sep 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-284 |
Wed, 23 Sep 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
Wed, 23 Sep 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Cinnamon's kotaemon contains improper authorization checks in multi‑user chat handlers | |
| References |
|
Projects
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Status: PUBLISHED
Assigner: certcc
Published:
Updated: 2026-09-24T14:37:20.022Z
Reserved: 2026-09-08T16:29:11.518Z
Link: CVE-2026-86867
Updated: 2026-09-23T18:10:51.647Z
Status : Deferred
Published: 2026-09-23T18:17:09.323
Modified: 2026-09-24T15:17:49.290
Link: CVE-2026-86867
No data.
OpenCVE Enrichment
Updated: 2026-09-26T06:00:06Z