Vulnerability · Published Jun 5, 2026 · Assigned by GitHub_M

CVE-2026-46357HAX CMS NodeJS application Vulnerable to Denial of Service using Malicious Import Request

Medium 6.5

In plain English

A medium-severity improper input validation in haxcms-nodejs from haxtheweb. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.2%top 84.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, the HAX CMS NodeJS application crashes when an authenticated attacker sends a specially crafted site creation request to the createSite endpoint. A single request is sufficient to take the entire application offline, requiring a manual server restart to restore service. Version 26.0.0 fixes the issue.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	@haxtheweb/haxcms-nodejs	26.0.0	GHSA-9r33-xhw8-4qqp

Affected products (as reported)

Vendor	Product	Versions
haxtheweb	haxcms-nodejs	< 26.0.0

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

https://github.com/haxtheweb/issues/security/advisories/GHSA-9r33-xhw8-4qqp x_refsource_CONFIRM