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.

INFO

Published Date :

2026-05-08T03:49:56.765Z

Last Modified :

2026-05-08T12:57:18.681Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-42276 vulnerability.

No data.

REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-42276.

URL Resource
https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-rw6w-hp62-gc8w cve-icon cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact