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Advisories

Let's Chat 0.4.0 - 0.4.8 Denial of Service via Null Dereference in Room Lookup

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severity
high
date
Affecting

  • lets-chat >= 0.4.0, <= 0.4.8

  • This repository was archived on 2025-12-01

CWE
  • CWE-476 NULL Pointer Dereference
CVSS
7.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Theodosis Paidakis
Description
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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