Report: CVE-2026-42276 - Onyx: IDOR in /chat/stop-chat-session allows any authenticated user to interrupt

Report: CVE-2026-42276 - Onyx: IDOR in /chat/stop-chat-session allows any authenticated user to interrupt

CVE ID :CVE-2026-42276 Published : May 8, 2026, 5:16 a.m. | 2 hours, 4 minutes ago 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. Severity: 4.3 | MEDIUM Visit the link for more details, such as CVSS details, affected products, timeline, and more...

CVE Details

Severity
MEDIUM
Published
May 8, 2026