cvedb.io
CVE-2026-66749
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2026-07-28T16:20:16.457 · Last modified 2026-07-28T16:20:16.457

Summary

Let's Chat 0.4.0 through 0.4.8 contains a null dereference vulnerability that allows authenticated attackers to crash the server by supplying a valid 24-character hex string room parameter that matches no document in the database. Attackers can send a crafted GET /messages request causing an uncaught TypeError in an asynchronous Mongoose callback that terminates the Node.js server process, with the same defect reachable through multiple code paths including the socket.io interface.

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.