{"id":"CVE-2026-59820","aliases":["GHSA-5jmr-gcrj-2c9q","PYSEC-2026-3477"],"url":"https://o3.security/vulnerability/CVE-2026-59820","summary":"LiteLLM: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","details":"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.","published":"2026-07-08T19:32:11.739Z","modified":"2026-08-12T03:51:15.994027667Z","cvss":null,"epss":{"score":0.00465,"percentile":0.38714,"asOf":"2026-09-06"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"litellm","fixedVersion":"1.83.7"}],"fix":{"url":"https://github.com/BerriAI/litellm/commit/6a15adcd64137d37f73dee76dfe7481f8c2d9196","label":"BerriAI/litellm@6a15adc"},"references":[{"type":"WEB","url":"https://github.com/BerriAI/litellm/releases/tag/v1.83.7-stable"},{"type":"ADVISORY","url":"https://github.com/BerriAI/litellm/security/advisories/GHSA-5jmr-gcrj-2c9q"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/59xxx/CVE-2026-59820.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59820"},{"type":"FIX","url":"https://github.com/BerriAI/litellm/commit/6a15adcd64137d37f73dee76dfe7481f8c2d9196"},{"type":"FIX","url":"https://github.com/BerriAI/litellm/pull/25475"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:15.994027667Z"}}