{"data":{"id":"5e30a949-c58c-4def-bfdb-5d248a178887","title":"GHSA-v4p8-mg3p-g94g: LiteLLM: Authenticated command execution via MCP stdio test endpoints","summary":"LiteLLM's two MCP preview endpoints, POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list, accepted full server configurations including command, args and env for the stdio transport. Calling them with a stdio configuration spawned the supplied command as a subprocess on the proxy host with the proxy process's privileges. Because the endpoints checked only for a valid proxy API key and no role, any authenticated user, including low-privilege internal-user keys, could run arbitrary commands on the host.","solution":"Fixed in 1.83.7. Both test endpoints now require the PROXY_ADMIN role. If upgrading is not immediately possible, block POST /mcp-rest/test/connection and POST /mcp-rest/test/tools/list at the reverse proxy or API gateway.","labels":["security"],"sourceUrl":"https://github.com/advisories/GHSA-v4p8-mg3p-g94g","publishedAt":"2026-04-25T23:27:54.000Z","cveId":null,"cweIds":null,"cvssScore":null,"cvssSeverity":"high","severity":"high","attackType":["other"],"issueType":"vulnerability","affectedPackages":["litellm@>= 1.74.2, < 1.83.7 (fixed: 1.83.7)"],"affectedPackageNames":["litellm"],"affectedPackageRefs":["pypi:litellm"],"affectedVendors":[],"affectedVendorsRaw":["LiteLLM","MCP"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":null,"epssScore":null,"epssCheckedAt":null,"kevDateAdded":null,"advisoryAliases":["GHSA-v4p8-mg3p-g94g"],"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":true,"disclosureDate":"2026-04-25T23:27:54.000Z","fixReleasedAt":"2026-04-13T17:34:58.360Z","daysToFix":-12,"fixCheckedAt":"2026-10-29T21:37:17.897Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":["confidentiality","integrity","availability"],"aiComponentTargeted":"api","llmSpecific":false,"classifierConfidence":0.93,"researchCategory":null,"atlasIds":null,"fixes":[{"ecosystem":"pypi","name":"litellm","fixedVersion":"1.83.7","matchedVersion":"1.83.7","fixReleasedAt":"2026-04-13T17:34:58.360Z","daysToFix":-12,"match":"ecosystem","source":"tracked","status":"found","checkedAt":"2026-10-29T21:37:17.669Z"}]}}