Vulnerability Description
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.83.7-stable, LiteLLM Skills archive extraction did not sufficiently validate file paths from uploaded skill ZIP archives, allowing an authenticated user with access to LiteLLM LLM API routes or a key whose allowed_routes includes /v1/skills, anthropic_routes, or llm_api_routes to upload a crafted skill archive containing path traversal entries that could be written outside the intended extraction or staging directory. This issue is fixed in version 1.83.7-stable.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Litellm | Litellm | < 1.83.7 |
Related Weaknesses (CWE)
References
- https://github.com/BerriAI/litellm/commit/6a15adcd64137d37f73dee76dfe7481f8c2d91Patch
- https://github.com/BerriAI/litellm/pull/25475Issue TrackingPatch
- https://github.com/BerriAI/litellm/releases/tag/v1.83.7-stableProductRelease Notes
- https://github.com/BerriAI/litellm/security/advisories/GHSA-5jmr-gcrj-2c9qMitigationPatchVendor Advisory
FAQ
What is CVE-2026-59820?
CVE-2026-59820 is a vulnerability with a CVSS score of 6.5 (MEDIUM). LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.83.7-stable, LiteLLM Skills archive extraction did not sufficiently validate file paths from uploaded s...
How severe is CVE-2026-59820?
CVE-2026-59820 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-59820?
Check the references section above for vendor advisories and patch information. Affected products include: Litellm Litellm.