CVE-2026-59819: LiteLLM

Medium severity, CVSS 4.9. EPSS: 0.6% chance of exploitation in the next 30 days.

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.83.10-stable, LiteLLM's /health/test_connection endpoint resolved request-supplied environment and OIDC file references in litellm_params, allowing a proxy administrator or another privileged caller with permission to test model connections to read files from the local filesystem via an oidc/file/ reference. This issue is fixed in version 1.83.10-stable.

Affected products

• LiteLLM LiteLLM: before 1.83.10 (fixed in 1.83.10); version 1.83.10 only

Published 2026-07-08. Last modified 2026-07-13.