CVE-2025-67731
CVE-2025-67731 · Servify Express does not enforce rate limiting when parsing JSON
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 · High · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
servify-express
- Versions
- < 1.2: Affected
No fix published
servify-express npm
- Affected ranges
- ECOSYSTEM: < 1.2
Update to 1.2