{"data":{"id":"154d115f-60e9-4441-8924-7589200f85b1","title":"GHSA-fhh6-4qxv-rpqj: 9router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes","summary":"9router, a tool for managing AI plugins, has a critical vulnerability where two unprotected API endpoints can be chained together to run arbitrary OS commands. The problem occurs because the authentication middleware (a security check) only protects 8 specific routes, while 40+ routes under `/api/cli-tools/*` and `/api/mcp/*` have no protection, allowing attackers with network access to register malicious commands and then trigger them without any credentials.","solution":"N/A -- no mitigation discussed in source.","labels":["security"],"sourceUrl":"https://github.com/advisories/GHSA-fhh6-4qxv-rpqj","publishedAt":"2026-05-19T19:22:05.000Z","cveId":"CVE-2026-46339","cweIds":null,"cvssScore":null,"cvssSeverity":"critical","severity":"critical","attackType":["supply_chain"],"issueType":"vulnerability","affectedPackages":["9router@>= 0.4.30, < 0.4.37 (fixed: 0.4.37)"],"affectedVendors":[],"affectedVendorsRaw":["9router"],"classifierModel":"claude-haiku-4-5-20251001","classifierPromptVersion":"v3","cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":"unknown","epssScore":0,"patchAvailable":true,"disclosureDate":"2026-05-19T19:22:05.000Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":["confidentiality","integrity","availability"],"aiComponentTargeted":"framework","llmSpecific":false,"classifierConfidence":0.92,"researchCategory":null,"atlasIds":null}}