CVE-2025-67731: Servify Express is a Node.js package to start an Express server and log the port it's running on

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HIGH 7.5REMOTEUPGRADE

CVE-2025-67731 is a high-severity flaw (CVSS 7.5) affecting servify express. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 66%)
CISA exploited list	No
Weakness	CWE-400
Published	2025-12-12
Last modified	2026-10-07

Publisher (CNA): GitHub, Inc. · Vendor: servify-express.js

Last updated 2026-10-07 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2025-12-12 08:15 UTCPublished CVE record published
2026-10-07 20:10 UTCUpdated Record last modified

servify-express.js servify express UPGRADE

Affected: < 1.2

Fixed in: 1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls servify-express

2. UPGRADE to 1.2

npm install servify-express@">=1.2"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-67731?

servify express: upgrade to 1.2. Exact commands for each OS are on this page.

Is CVE-2025-67731 being exploited?

CVE-2025-67731 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-67731 affect?

CVE-2025-67731 affects servify express. Severity is high (CVSS 7.5). 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.

How urgent is CVE-2025-67731?

Priority 40/100. High severity; Remotely exploitable, no login, no user action

Software pages

Node.js vulnerabilities · Express.js vulnerabilities

References

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