CVE-2025-67731

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 v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/Aarondoran/servify-express/commit/8dff7f56504b356278d849734ef2050e5cd23b61	Patch
https://github.com/Aarondoran/servify-express/releases/tag/V1.2	Product Release Notes
https://github.com/Aarondoran/servify-express/security/advisories/GHSA-qgc4-8p88-4w7m	Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:servify-express.js:servify_express:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2025-12-12 08:15

Updated : 2026-03-17 19:40

NVD link : CVE-2025-67731

Mitre link : CVE-2025-67731

CVE.ORG link : CVE-2025-67731

JSON object : View

Products Affected

servify-express.js

servify_express

CWE

CWE-400

Uncontrolled Resource Consumption

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