CVE-2026-85700 — Onyx 4.6.6 Custom Tool Secret Header Disclosure via Tool Endpoints
Onyx 4.6.6 fails to properly restrict access to custom tool credentials stored in custom_headers, allowing any authenticated user to read admin-defined API keys. Attackers with …
Published: 2026-09-04 · CVSS: 7.1 · CVSS 4.0
Onyx 4.6.6 fails to properly restrict access to custom tool credentials stored in custom_headers, allowing any authenticated user to read admin-defined API keys. Attackers with basic authentication can call GET /tool/{tool_id} or GET /tool endpoints to retrieve plaintext authorization headers and third-party API credentials, then use them to directly access upstream APIs.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7