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Fencer Intel
medium 6.5

CVE-2026-46357 json

HAX CMS NodeJS application Vulnerable to Denial of Service using Malicious Import Request

published 5mo ago modified last mo. also EUVD-2026-34897 , GHSA-9r33-xhw8-4qqp

cvss
6.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits
0
none known

Summary

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.

Patch / fix

  • npm @haxtheweb/haxcms-nodejs 26.0.0
  • haxtheweb haxcms-nodejs 26.0.0

Is CVE-2026-46357 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
5mo ago

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/haxtheweb/issues/security/advisories/GHSA-9r33-xhw8-4qqp referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
npm @haxtheweb/haxcms-nodejs
<26.0.0
26.0.0

Affected products

  • haxtheweb haxcms-nodejs

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-476 NULL Pointer Dereference

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.