CVE-2026-85700
CVE-2026-85700
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.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-85700?
- CVE-2026-85700 is a medium-severity vulnerability, classified under Insufficiently Protected Credentials. CVSS score: 6.5/10. Published 2026-09-04.
- How severe is CVE-2026-85700?
- Medium severity. CVSS v3 base score is 6.5 out of 10.