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TI-2026-35887 Aliases CVE-2026-48527GHSA-g2g8-95qg-v35h

HaxCMS has a stored Cross-Site Scripting (XSS) bypass in saveNode endpoint

Priority HIGH 73CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · 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 helps manage microsite universe with PHP or NodeJs backends. Versions up to and including 26.0.0 are affected by a stored cross-site scripting (XSS) vulnerability in the `/system/api/saveNode` endpoint. An authenticated user with a permission to edit pages can bypass the HTML sanitizer by injecting an event handler attribute without whitespace before the attribute name. @haxtheweb/haxcms-nodejs 26.0.1 and haxcms-php 26.0.2 patch the issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00228 13th percentileScored 2026-11-07
Fix Fixed haxcms-nodejs (haxtheweb): 26.0.1haxcms-php (haxtheweb): 26.0.2+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
haxthewebhaxcms-nodejsbefore 26.0.126.0.1Patch availableCNA
haxthewebhaxcms-phpbefore 26.0.226.0.2Patch availableCNA
—@haxtheweb/haxcms-nodejs (npm)before 26.0.126.0.1Patch availableGHSA-g2g8-95qg-v35h
  • haxcms-nodejs Vendorhaxtheweb Affected before 26.0.1 Fixed in 26.0.1 Patch available CNA
  • haxcms-php Vendorhaxtheweb Affected before 26.0.2 Fixed in 26.0.2 Patch available CNA
  • @haxtheweb/haxcms-nodejs (npm) Vendor— Affected before 26.0.1 Fixed in 26.0.1 Patch available GHSA-g2g8-95qg-v35h

Remediation

  • Fix · CNA haxcms-nodejs (haxtheweb) Fixed in 26.0.1
  • Fix · CNA haxcms-php (haxtheweb) Fixed in 26.0.2
  • Fix · GHSA-g2g8-95qg-v35h @haxtheweb/haxcms-nodejs (npm) Fixed in 26.0.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-48527
  2. 2026-10-03 Alias added: GHSA-g2g8-95qg-v35h

References

Advisory 1

Other 2

  • TI-2026-34109 HAX CMS Vulnerable to Private Key Disclosure via Broken HMAC Implementation CVSS 4.0CRITICAL 9.3
  • TI-2026-34105 HAX open-apis: Credential Theft via Server-Side Request Forgery (SSRF) in open-apis CVSS 4.0HIGH 8.7
  • TI-2026-27339 HAX CMS's public /server-status endpoint exposes authentication tokens, user activity, and client IP addresses CVSS 4.0HIGH 8.7
  • TI-2026-34113 Authenticated Remote Code Execution via File Overwrite CVSS 4.0CRITICAL 9.4
  • TI-2025-23152 HAX CMS PHP allows Insecure File Upload to Lead to Remote Code Execution CVSS 3.1CRITICAL 10.0
  • TI-2026-34194 HAX CMS: Stored XSS via '<video-player>' component allows arbitrary JavaScript execution and token theft CVSS 4.0CRITICAL 9.3
See all 32 →

Sources

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