Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Litellm | Litellm | < 1.83.10 |
Related Weaknesses (CWE)
References
- https://github.com/BerriAI/litellm/pull/25592Issue TrackingPatch
- https://github.com/BerriAI/litellm/releases/tag/v1.83.10-stableProductRelease Notes
- https://github.com/BerriAI/litellm/security/advisories/GHSA-4g5m-c9r5-49xfMitigationPatchVendor Advisory
FAQ
What is CVE-2026-59819?
CVE-2026-59819 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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...
How severe is CVE-2026-59819?
CVE-2026-59819 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-59819?
Check the references section above for vendor advisories and patch information. Affected products include: Litellm Litellm.