CVE-2025-67731

HIGH EPSS 26.5%
Published Dec 12, 20256mo ago · Modified Jun 17, 20262w ago
8.7 CVSS 4.0
High
Find Similar
Published Dec 12, 2025 6mo ago
Last Modified Jun 17, 2026 2w ago

Description

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 Details

Base Score
8.7
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
26.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-400 Uncontrolled Resource Consumption Resource Mgmt

Affected Products 1

VendorProductVersionRange
servify-express.jsservify_express* <1.2

References 3

  • github.com https://github.com/Aarondoran/servify-express/commit/8dff7f56504b356278d849734ef2050e5cd23b61
    Patch
  • github.com https://github.com/Aarondoran/servify-express/releases/tag/V1.2
    ProductRelease Notes
  • github.com https://github.com/Aarondoran/servify-express/security/advisories/GHSA-qgc4-8p88-4w7m
    MitigationVendor Advisory

Remediation

  • github.com https://github.com/Aarondoran/servify-express/commit/8dff7f56504b356278d849734ef2050e5cd23b61
    Patch