{"data":{"id":"27715b13-4175-41fd-8ca6-7e074e00759e","title":"CVE-2026-59823: LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.83.9, an authenticated…","summary":"LiteLLM, an AI Gateway proxy for calling LLM APIs, is affected before version 1.83.9. An authenticated caller holding a valid virtual key can nest api_base inside the user_config request body, which bypasses is_request_body_safe because that check blocks only top-level api_base and base_url. Since user_config builds the outbound router, the caller can redirect server-side requests to an internal or external host of their choosing and reach endpoints they could not otherwise access.","solution":"Fixed in 1.83.9.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-59823","publishedAt":"2026-09-16T19:17:21.377Z","cveId":"CVE-2026-59823","cweIds":["CWE-918"],"cvssScore":null,"cvssSeverity":null,"severity":"high","attackType":["supply_chain","other"],"issueType":"vulnerability","affectedPackages":["litellm@<= 1.83.8 (fixed: 1.83.9)"],"affectedPackageNames":["litellm"],"affectedPackageRefs":["pypi:litellm"],"affectedVendors":[],"affectedVendorsRaw":["LiteLLM"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":"LiteLLM Proxy server-side request forgery through user_config api_base","headlinePromptVersion":"h1","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":"unknown","epssScore":0.00439,"epssCheckedAt":"2026-11-04T00:12:27.579Z","kevDateAdded":null,"advisoryAliases":["GHSA-hx8v-g79f-8w5f"],"affectedPackagesSource":"ghsa","affectedPackagesCheckedAt":"2026-10-10T03:43:40.618Z","patchAvailable":true,"disclosureDate":"2026-09-16T19:17:21.377Z","fixReleasedAt":"2026-04-17T01:29:04.725Z","daysToFix":-152,"fixCheckedAt":"2026-10-29T21:30:33.421Z","capecIds":["CAPEC-664"],"crossRefCount":1,"attackSophistication":"moderate","impactType":["confidentiality","integrity"],"aiComponentTargeted":"api","llmSpecific":true,"classifierConfidence":0.95,"researchCategory":null,"atlasIds":["AML.T0010"],"fixes":[{"ecosystem":"pypi","name":"litellm","fixedVersion":"1.83.9","matchedVersion":"1.83.9","fixReleasedAt":"2026-04-17T01:29:04.725Z","daysToFix":-152,"match":"ecosystem","source":"tracked","status":"found","checkedAt":"2026-10-29T21:30:33.272Z"}]}}