CVE WatchSep 4, 2026

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 ad

CVSS

6.5

Medium

EPSS

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KEV

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Exploit Today

0-100

Published: Sep 4, 2026 · Last modified: Sep 4, 2026 · CWE-522

EPSS · 30d

Not enough EPSS history yet.

Technical description

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.

Official references

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