CVE Watch24 sept 2026

CVE-2026-86867

Cinnamon's Kotaemon (all versions up to and including v0.12.0) multi-user chat interface contains multiple vulnerabilities due to incorrect

CVSS

6.5

Medio

EPSS

0.2%

KEV

—

Exploit Today

0-100

Publicado: 23 sept 2026 · Última mod.: 24 sept 2026 · CWE-200 · CWE-639 · CWE-862

EPSS · 30d

0.1%EPSS · 30 días0.2%

2026-09-242026-10-19

Descripción técnica

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.

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