{"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"}}]}}

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