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TI-2025-31217 Aliases CVE-2025-49137GHSA-2vc4-3hx7-v7v7

Hax CMS Stored Cross-Site Scripting vulnerability

Priority HIGH 70CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

HAX CMS PHP allows users to manage their microsite universe with a PHP backend. Prior to version 11.0.0, the application does not sufficiently sanitize user input, allowing for the execution of arbitrary JavaScript code. The 'saveNode' and 'saveManifest' endpoints take user input and store it in the JSON schema for the site. This content is then rendered in the generated HAX site. Although the application does not allow users to supply a `script` tag, it does allow the use of other HTML tags to run JavaScript. Version 11.0.0 fixes the issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00295 22nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed issues (haxtheweb): 11.0.0elmsln/haxcms (Packagist): 11.0.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
haxthewebissuesbefore 11.0.011.0.0Patch availableCNA
—elmsln/haxcms (Packagist)before 11.0.011.0.0Patch availableGHSA-2vc4-3hx7-v7v7
  • issues Vendorhaxtheweb Affected before 11.0.0 Fixed in 11.0.0 Patch available CNA
  • elmsln/haxcms (Packagist) Vendor— Affected before 11.0.0 Fixed in 11.0.0 Patch available GHSA-2vc4-3hx7-v7v7

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:psu:haxcms-nodejs:*:*:*:*:*:node.js:*:*before 11.0.0Vulnerablehaxtheweb
cpe:2.3:a:psu:haxcms-php:*:*:*:*:*:*:*:*before 11.0.0Vulnerablehaxtheweb
  • cpe:2.3:a:psu:haxcms-nodejs:*:*:*:*:*:node.js:*:* Versions before 11.0.0 Vulnerable ·haxtheweb
  • cpe:2.3:a:psu:haxcms-php:*:*:*:*:*:*:*:* Versions before 11.0.0 Vulnerable ·haxtheweb

Remediation

  • Fix · CNA issues (haxtheweb) Fixed in 11.0.0
  • Fix · GHSA-2vc4-3hx7-v7v7 elmsln/haxcms (Packagist) Fixed in 11.0.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-49137
  2. 2026-10-03 Alias added: GHSA-2vc4-3hx7-v7v7

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • TI-2025-33970 HAXcms's Insecure Default Configuration Leads to Unauthenticated Access CVSS 4.0CRITICAL 9.3
  • TI-2025-31221 HaxCMS-PHP Command Injection Vulnerability CVSS 3.1HIGH 8.8
  • TI-2025-34187 HAX CMS Backend Lacks Comprehensive Authorization Checks CVSS 3.1HIGH 8.3
  • TI-2025-33971 HAX CMS NodeJs's Disabled Content Security Policy Enables Cross-Site Scripting CVSS 4.0HIGH 7.2
  • TI-2025-33977 HAX CMS NodeJs's Improper Error Handling Leads to Denial of Service CVSS 4.0HIGH 7.1
  • TI-2025-31219 @haxtheweb/haxcms-nodejs Iframe Phishing vulnerability CVSS 3.1MEDIUM 6.5
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences