Versions of m-server before 1.4.2 are vulnerable to path traversal allowing a remote attacker to display content of arbitrary files from the server.

Recommendation

Update to version 1.4.2 or later.

References

• nunnly/m-server@01f13f0
• https://www.npmjs.com/advisories/731
• https://hackerone.com/reports/319795
• https://github.com/nodejs/security-wg/blob/master/vuln/npm/468.json