Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the POST /chat/stop-chat-session/{chat_session_id} endpoint lets any authenticated user stop any other user's active chat session. The endpoint checks authentication but never verifies the session belongs to the caller. An attacker who knows a chat session UUID can kill another user's LLM generation mid-stream. This issue has been patched in versions 3.0.9, 3.1.6, and 3.2.6.
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History
Fri, 08 May 2026 13:15:00 +0000
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| Description | Onyx is an open-source AI platform. Prior to versions 3.0.9, 3.1.6, and 3.2.6, the POST /chat/stop-chat-session/{chat_session_id} endpoint lets any authenticated user stop any other user's active chat session. The endpoint checks authentication but never verifies the session belongs to the caller. An attacker who knows a chat session UUID can kill another user's LLM generation mid-stream. This issue has been patched in versions 3.0.9, 3.1.6, and 3.2.6. | |
| Title | Onyx: IDOR in /chat/stop-chat-session allows any authenticated user to interrupt other users chat sessions | |
| Weaknesses | CWE-639 | |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-08T12:57:18.681Z
Reserved: 2026-04-26T11:53:27.708Z
Link: CVE-2026-42276
Updated: 2026-05-08T12:57:15.220Z
Status : Awaiting Analysis
Published: 2026-05-08T05:16:10.557
Modified: 2026-05-08T16:02:14.343
Link: CVE-2026-42276
No data.
OpenCVE Enrichment
Updated: 2026-05-08T06:30:46Z