{"data":{"id":"fa280272-7198-4a48-9cbd-8c0730906cff","title":"CVE-2026-55157: Token Optimizer MCP measures token savings per AI coding agent, optimizes context, and shares a live local knowledge…","summary":"Prior to version 5.1.0, token-optimizer-mcp is vulnerable to OS command injection in the smart_user tool. Any MCP client that can call smart_user can run arbitrary shell commands through the username argument of the get-user-info operation, with the privileges of the user running the server.","solution":"This issue has been patched in version 5.1.0.","labels":["security"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-55157","publishedAt":"2026-09-28T18:17:23.373Z","cveId":"CVE-2026-55157","cweIds":["CWE-78"],"cvssScore":"8.4","cvssSeverity":"high","severity":"high","attackType":["other"],"issueType":"vulnerability","affectedPackages":["@ooples/token-optimizer-mcp@< 5.1.0 (fixed: 5.1.0)"],"affectedPackageNames":["@ooples/token-optimizer-mcp"],"affectedVendors":[],"affectedVendorsRaw":["Token Optimizer MCP"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":"Token Optimizer MCP OS command injection through smart_user username argument","headlinePromptVersion":"h1","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"local","attackComplexity":"low","privilegesRequired":"none","userInteraction":"none","exploitMaturity":"unknown","epssScore":0.00705,"epssCheckedAt":"2026-10-10T02:59:00.848Z","kevDateAdded":null,"advisoryAliases":["GHSA-49mq-fc6q-3h46"],"affectedPackagesSource":"ghsa","affectedPackagesCheckedAt":"2026-10-10T03:43:09.553Z","patchAvailable":true,"disclosureDate":"2026-09-28T18:17:23.373Z","capecIds":["CAPEC-88"],"crossRefCount":0,"attackSophistication":"trivial","impactType":["confidentiality","integrity","availability"],"aiComponentTargeted":"plugin","llmSpecific":false,"classifierConfidence":0.9,"researchCategory":null,"atlasIds":null}}