{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-59822", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-07-07T15:00:50.978Z", "datePublished": "2026-07-08T19:32:18.611Z", "dateUpdated": "2026-07-08T19:32:18.611Z"}, "containers": {"cna": {"title": "LiteLLM: MCP Authentication Bypass via OAuth2 Passthrough Fallback", "problemTypes": [{"descriptions": [{"cweId": "CWE-287", "lang": "en", "description": "CWE-287: Improper Authentication", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-306", "lang": "en", "description": "CWE-306: Missing Authentication for Critical Function", "type": "CWE"}]}], "metrics": [{"cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "baseScore": 8.8, "baseSeverity": "HIGH", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N", "version": "4.0"}}], "references": [{"name": "https://github.com/BerriAI/litellm/security/advisories/GHSA-7488-6r32-c95q", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/BerriAI/litellm/security/advisories/GHSA-7488-6r32-c95q"}, {"name": "https://github.com/BerriAI/litellm/pull/26463", "tags": ["x_refsource_MISC"], "url": "https://github.com/BerriAI/litellm/pull/26463"}, {"name": "https://github.com/BerriAI/litellm/commit/73869f0faf7d11ee21adcb5f91b8c33a340b6c2c", "tags": ["x_refsource_MISC"], "url": "https://github.com/BerriAI/litellm/commit/73869f0faf7d11ee21adcb5f91b8c33a340b6c2c"}, {"name": "https://github.com/BerriAI/litellm/releases/tag/v1.84.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/BerriAI/litellm/releases/tag/v1.84.0"}], "affected": [{"vendor": "BerriAI", "product": "litellm", "versions": [{"version": "< 1.84.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-08T19:32:18.611Z"}, "descriptions": [{"lang": "en", "value": "LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.84.0, LiteLLM's MCP Streamable HTTP endpoint allowed an unauthenticated attacker to use a fabricated Authorization header to trigger an OAuth2 passthrough fallback path that replaced failed LiteLLM key validation with an empty UserAPIKeyAuth() object, allowing requests to reach MCP tooling without a valid LiteLLM key. This issue is fixed in version 1.84.0."}], "source": {"advisory": "GHSA-7488-6r32-c95q", "discovery": "UNKNOWN"}}}}

{}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.84.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "litellm", "source": "cna", "vendor": "BerriAI"}, "product": "litellm", "vendor": "berriai"}], "created": "2026-07-08T20:30:04.431001+00:00", "updated": "2026-07-08T20:30:04.431024+00:00", "vendors": ["berriai", "berriai$PRODUCT$litellm"]}