{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-12773", "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "state": "PUBLISHED", "assignerShortName": "VulDB", "dateReserved": "2026-06-20T09:26:26.143Z", "datePublished": "2026-06-21T03:15:08.647Z", "dateUpdated": "2026-06-21T03:15:08.647Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "1af790b2-7ee1-4545-860a-a788eba489b5", "shortName": "VulDB", "dateUpdated": "2026-06-21T03:15:08.647Z"}, "title": "BerriAI litellm MCP Proxy user_api_key_auth_mcp.py UserAPIKeyAuth improper authentication", "problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-287", "lang": "en", "description": "Improper Authentication"}]}], "affected": [{"vendor": "BerriAI", "product": "litellm", "versions": [{"version": "1.59.0", "status": "affected"}, {"version": "1.59.1", "status": "affected"}, {"version": "1.59.2", "status": "affected"}, {"version": "1.59.3", "status": "affected"}, {"version": "1.59.4", "status": "affected"}, {"version": "1.59.5", "status": "affected"}, {"version": "1.59.6", "status": "affected"}, {"version": "1.59.7", "status": "affected"}, {"version": "1.59.8", "status": "affected"}], "cpes": ["cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*"], "modules": ["MCP Proxy"]}], "descriptions": [{"lang": "en", "value": "A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/_experimental/mcp_server/auth/user_api_key_auth_mcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure."}], "metrics": [{"cvssV4_0": {"version": "4.0", "baseScore": 6.9, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P", "baseSeverity": "MEDIUM"}}, {"cvssV3_1": {"version": "3.1", "baseScore": 7.3, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "HIGH"}}, {"cvssV3_0": {"version": "3.0", "baseScore": 7.3, "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R", "baseSeverity": "HIGH"}}, {"cvssV2_0": {"version": "2.0", "baseScore": 7.5, "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR"}}], "timeline": [{"time": "2026-06-20T00:00:00.000Z", "lang": "en", "value": "Advisory disclosed"}, {"time": "2026-06-20T02:00:00.000Z", "lang": "en", "value": "VulDB entry created"}, {"time": "2026-06-20T11:31:42.000Z", "lang": "en", "value": "VulDB entry last update"}], "credits": [{"lang": "en", "value": "Eric-c (VulDB User)", "type": "reporter"}, {"lang": "en", "value": "VulDB CNA Team", "type": "coordinator"}], "references": [{"url": "https://vuldb.com/vuln/372515", "name": "VDB-372515 | BerriAI litellm MCP Proxy user_api_key_auth_mcp.py UserAPIKeyAuth improper authentication", "tags": ["vdb-entry", "technical-description"]}, {"url": "https://vuldb.com/vuln/372515/cti", "name": "VDB-372515 | CTI Indicators (IOB, IOC, IOA)", "tags": ["signature", "permissions-required"]}, {"url": "https://vuldb.com/cve/CVE-2026-12773", "name": "CVE-2026-12773 | CVE Analysis and Report", "tags": ["third-party-advisory"]}, {"url": "https://vuldb.com/submit/811282", "name": "Submit #811282 | litellm <= 1.59.8 Improper Authentication (CWE-287)", "tags": ["third-party-advisory"]}, {"url": "https://gist.github.com/YLChen-007/3cfaad10a69d7a15e4d4d458cb53309e", "tags": ["exploit"]}]}}}

{}

{}

{}

{}