Summary
The HAX CMS NodeJS application crashes when an authenticated attacker provides an API request lacking required URL parameters. This vulnerability affects the listFiles and saveFiles endpoints.
Details
This vulnerability exists because the application does not properly handle exceptions which occur as a result of changes to user-modifiable URL parameters.
Affected Resources
• listFiles.js:22 listFiles()
• saveFile.js:52 saveFile()
• system/api/listFiles
• system/api/saveFile
PoC
Targeting an instance of instance of HAX CMS NodeJS, send a request without parameters to
listFilesorsaveFiles. The following screenshot shows the request in Burp Suite.The server will crash with
ERR_INVALID_ARG_TYPE.
Impact
An authenticated attacker can deny access to the HAX CMS NodeJS application by crashing the backend server. This prevents all users from accessing the backend system. If the backend system is hosting websites, those websites will be unavailable.
The application does not adequately validate input before processing it, allowing unexpected values to reach sensitive code paths. Typical impact: varies by context: data corruption, logic bypass, or denial of service.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Remediation advice
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is CVE-2025-54134? CVE-2025-54134 is a high-severity improper input validation vulnerability in @haxtheweb/haxcms-nodejs (npm), affecting versions < 11.0.9. It is fixed in 11.0.9. The application does not adequately validate input before processing it, allowing unexpected values to reach sensitive code paths.
- Which versions of @haxtheweb/haxcms-nodejs are affected by CVE-2025-54134? @haxtheweb/haxcms-nodejs (npm) versions < 11.0.9 is affected.
- Is there a fix for CVE-2025-54134? Yes. CVE-2025-54134 is fixed in 11.0.9. Upgrade to this version or later.
- Is CVE-2025-54134 exploitable, and should I be worried? Whether CVE-2025-54134 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2025-54134 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2025-54134? Upgrade
@haxtheweb/haxcms-nodejsto 11.0.9 or later.