{"cve":"CVE-2026-46339","nvd":{"published":"2026-07-15T21:16:50.067","modified":"2026-10-24T21:10:00.130","status":"Deferred","description":"9Router is an AI router & token saver. From 0.4.30 until 0.4.37, 9Router's src/proxy.js middleware did not protect /api/cli-tools/* and /api/mcp/*, allowing unauthenticated registration of customPlugins through src/app/api/cli-tools/cowork-settings/route.js and command execution through the MCP bridge. This vulnerability is fixed in 0.4.37.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10.0},"cwes":["CWE-78","CWE-306"],"references":["https://github.com/decolua/9router/commit/992f4db4a0d858bcc86b4786f2abab117a6ccdf8","https://github.com/decolua/9router/security/advisories/GHSA-fhh6-4qxv-rpqj","https://github.com/decolua/9router/security/advisories/GHSA-fhh6-4qxv-rpqj"],"products":[],"source":"nvd","synced_at":"2026-10-25T17:50:08.599881581+00:00"},"epss":{"cve":"CVE-2026-46339","score":0.02762,"percentile":0.86179,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-fhh6-4qxv-rpqj","url":"https://osv.dev/vulnerability/GHSA-fhh6-4qxv-rpqj","summary":"9router: Unauthenticated Remote Code Execution via unprotected MCP custom plugin routes","modified":"2026-05-19T19:41:27.045250Z","packages":[{"ecosystem":"npm","name":"9router","purl":"pkg:npm/9router","ranges":[">=0.4.30 <0.4.37"],"fixed":["0.4.37"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}