CVE-2026-42276

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.

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Produits concernés

• onyx-dot-app onyx
• Onyx onyx

Scores CVSS

Faiblesses (CWE)

• CWE-639

Références

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

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories