CVE-2025-67731

CVE-2025-67731 · Servify Express does not enforce rate limiting when parsing JSON

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Servify Express is a Node.js package to start an Express server and log the port it's running on. Prior to 1.2, the Express server used express.json() without a size limit, which could allow attackers to send extremely large request bodies. This can cause excessive memory usage, degraded performance, or process crashes, resulting in a Denial of Service (DoS). Any application using the JSON parser without limits and exposed to untrusted clients is affected. The issue is not a flaw in Express itself, but in configuration. This issue is fixed in version 1.2. To work around, consider adding a limit option to the JSON parser, rate limiting at the application or reverse-proxy level, rejecting unusually large requests before parsing, or using a reverse proxy (such as NGINX) to enforce maximum request body sizes.

CVSS 8.7 · Élevée · EPSS 0,4% · Correctif disponible

Publication

2025-12-12T07:40:53.047Z

Mise à jour

2025-12-12T20:44:17.680Z

Pile logicielle: node

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