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.
References
| Link | Resource |
|---|---|
| https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-rw6w-hp62-gc8w | Exploit Vendor Advisory |
| https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-rw6w-hp62-gc8w | Exploit Vendor Advisory |
Configurations
Configuration 1 (hide)
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History
12 May 2026, 14:08
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-rw6w-hp62-gc8w - Exploit, Vendor Advisory | |
| CPE | cpe:2.3:a:onyx:onyx:*:*:*:*:*:*:*:* | |
| First Time |
Onyx
Onyx onyx |
08 May 2026, 14:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/onyx-dot-app/onyx/security/advisories/GHSA-rw6w-hp62-gc8w - |
08 May 2026, 05:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-08 05:16
Updated : 2026-05-12 14:08
NVD link : CVE-2026-42276
Mitre link : CVE-2026-42276
CVE.ORG link : CVE-2026-42276
JSON object : View
Products Affected
onyx
- onyx
CWE
CWE-639
Authorization Bypass Through User-Controlled Key