4.3

CVE-2026-42276

Exploit

Onyx: IDOR in /chat/stop-chat-session allows any authenticated user to interrupt other users chat sessions

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Onyx ≫ Onyx Version < 3.0.9
Onyx ≫ Onyx Version >= 3.1.0 < 3.1.6
Onyx ≫ Onyx Version >= 3.2.0 < 3.2.6
VulnDex Vulnerability Enrichment
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.28% 0.194
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 4.3 2.8 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CWE-639 Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-rw6w-hp62-gc8w
Vendor Advisory
Exploit