{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59823","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-07-07T15:00:50.978Z","datePublished":"2026-09-16T18:36:21.105Z","dateUpdated":"2026-09-17T15:07:47.837Z"},"containers":{"cna":{"title":"LiteLLM: Server-side request forgery via the `user_config` request parameter in LiteLLM Proxy","problemTypes":[{"descriptions":[{"cweId":"CWE-918","lang":"en","description":"CWE-918: Server-Side Request Forgery (SSRF)","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"LOW","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/BerriAI/litellm/security/advisories/GHSA-hx8v-g79f-8w5f","tags":["x_refsource_CONFIRM"],"url":"https://github.com/BerriAI/litellm/security/advisories/GHSA-hx8v-g79f-8w5f"},{"name":"https://github.com/BerriAI/litellm/pull/25827","tags":["x_refsource_MISC"],"url":"https://github.com/BerriAI/litellm/pull/25827"},{"name":"https://github.com/BerriAI/litellm/commit/47214be317f45a2d2ac08258362e0481411eb427","tags":["x_refsource_MISC"],"url":"https://github.com/BerriAI/litellm/commit/47214be317f45a2d2ac08258362e0481411eb427"}],"affected":[{"vendor":"BerriAI","product":"litellm","versions":[{"version":"< 1.83.9","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-16T18:36:21.105Z"},"descriptions":[{"lang":"en","value":"LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.83.9, an authenticated LiteLLM Proxy caller with a valid virtual key can place api_base inside the user_config request body to bypass is_request_body_safe, which blocks top-level api_base and base_url but previously did not inspect or reject user_config. Because user_config constructs the outbound router, the nested destination redirects a server-side request to an internal or external host selected by the caller and can expose endpoints the caller cannot otherwise access. This issue is fixed in version 1.83.9."}],"source":{"advisory":"GHSA-hx8v-g79f-8w5f","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-17T15:07:39.533665Z","id":"CVE-2026-59823","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-17T15:07:47.837Z"}}]}}