{"cve":"CVE-2026-84377","nvd":{"published":"2026-09-02T18:21:28.997","modified":"2026-09-09T21:05:23.237","status":"Awaiting Analysis","description":"LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to versions 1.88.6 and 1.96.2, any authenticated LiteLLM proxy user could redirect an outbound provider call to a destination the user controls and cause the proxy to send its configured provider credentials to that destination. Request validation in litellm/proxy/auth/auth_utils.py, litellm/proxy/common_request_processing.py, litellm/proxy/health_endpoints/_health_endpoints.py, litellm/proxy/image_endpoints/endpoints.py, and litellm/proxy/litellm_pre_call_utils.py used incomplete checks that did not cover every sensitive parameter or inspect equivalent values across nested request fields, path values, and bracket-notation form data. Routing and credential parameters including api_base, base_url, model_list, fallbacks, and litellm_credential_name could therefore be applied without clearing the operator's stored key, exposing upstream provider credentials and other configured secrets and permitting server-side requests to internal services reachable by the proxy. This issue is fixed in versions 1.88.6 and 1.96.2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","score":6.5},"cwes":["CWE-918"],"references":["https://github.com/BerriAI/litellm/commit/473f72e63a9777d793fbbf57194d8ec4fb97bc1b","https://github.com/BerriAI/litellm/commit/820f247a6abba55cd87d130bef7bba7be3b29d37","https://github.com/BerriAI/litellm/commit/c898d341c02299cf2506d0d8e84cc67953043593","https://github.com/BerriAI/litellm/pull/36011","https://github.com/BerriAI/litellm/pull/36314"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:50.842544443+00:00"},"epss":{"cve":"CVE-2026-84377","score":0.0054,"percentile":0.45426,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-3cv6-jpf6-8222","url":"https://osv.dev/vulnerability/GHSA-3cv6-jpf6-8222","summary":"LiteLLM: Authenticated SSRF and provider-credential exfiltration via unvalidated request-body routing parameters","modified":"2026-10-01T17:55:39.952052915Z","packages":[{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":["<1.88.6"],"fixed":["1.88.6"]},{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":[">=1.89.0 <1.89.7"],"fixed":["1.89.7"]},{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":[">=1.90.0 <1.90.7"],"fixed":["1.90.7"]},{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":[">=1.91.0 <1.91.5"],"fixed":["1.91.5"]},{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":[">=1.92.0 <1.92.2"],"fixed":["1.92.2"]},{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":[">=1.93.0 <1.93.2"],"fixed":["1.93.2"]},{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":[">=1.94.0 <1.94.3"],"fixed":["1.94.3"]},{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":[">=1.95.0 <1.95.1"],"fixed":["1.95.1"]},{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":[">=1.96.0 <1.96.2"],"fixed":["1.96.2"]}]},{"id":"PYSEC-2026-4066","url":"https://osv.dev/vulnerability/PYSEC-2026-4066","summary":"LiteLLM: Authenticated SSRF and provider-credential exfiltration via unvalidated request-body routing parameters","modified":"2026-10-01T17:45:03.105462256Z","packages":[{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":["<1.88.6",">=1.89.0 <1.89.7",">=1.90.0 <1.90.7",">=1.91.0 <1.91.5",">=1.92.0 <1.92.2",">=1.93.0 <1.93.2",">=1.94.0 <1.94.3",">=1.95.0 <1.95.1",">=1.96.0 <1.96.2"],"fixed":["1.88.6","1.89.7","1.90.7","1.91.5","1.92.2","1.93.2","1.94.3","1.95.1","1.96.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}