Path Traversal in Berriai Litellm
CVE-2026-59820
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.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
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:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.001
Affected products
- Berriai Litellm — versions < 1.83.7-stable
- Litellm — versions 1.83.7
Weakness classification (CWE)
References
- github.com/BerriAI/litellm/security/advisories/GHSA-5jmr-gcrj-2c9q (Patch, Mitigation, Vendor Advisory)
- github.com/BerriAI/litellm/pull/25475 (Patch, Issue Tracking)
- github.com/BerriAI/litellm/commit/6a15adcd64137d37f73dee76dfe7481f8c2d9196 (Patch)
- github.com/BerriAI/litellm/releases/tag/v1.83.7-stable (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-59820?
- CVE-2026-59820 is a medium-severity vulnerability in Berriai Litellm, classified under Path Traversal. CVSS score: 6.5/10. Published 2026-07-08.
- How severe is CVE-2026-59820?
- Medium severity. CVSS v3 base score is 6.5 out of 10.