CVE-2026-46396: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in haxtheweb haxcms-nodejs
HAX CMS helps manage microsite universe with PHP or NodeJs backends. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 26.0.0 due to improper sanitization of `<iframe>` elements. The application allows `javascript:` URIs in the `src` attribute, which are executed when a malicious page is viewed. This enables attackers to execute arbitrary JavaScript in the context of the victim’s browser and access sensitive data exposed to client-side scripts. Version 26.0.0 fixes the issue.
AI Analysis
Technical Summary
CVE-2026-46396 is a critical stored cross-site scripting vulnerability (CWE-79) in haxtheweb's haxcms-nodejs product. Versions before 26.0.0 improperly sanitize <iframe> elements, permitting javascript: URIs in the src attribute. When a malicious page is viewed, this leads to execution of arbitrary JavaScript code in the victim's browser, potentially exposing sensitive client-side data. The vulnerability has a CVSS 4.0 score of 9.3, indicating high impact and exploitability. The issue is fixed in version 26.0.0.
Potential Impact
Successful exploitation allows attackers to execute arbitrary JavaScript in the context of the victim's browser, potentially leading to theft of sensitive data accessible to client-side scripts. This can compromise user sessions, data confidentiality, and integrity within affected applications.
Mitigation Recommendations
Upgrade to haxcms-nodejs version 26.0.0 or later, which fixes the vulnerability by properly sanitizing <iframe> elements and disallowing javascript: URIs in the src attribute. No other official remediation or temporary fixes are indicated.
CVE-2026-46396: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in haxtheweb haxcms-nodejs
Description
HAX CMS helps manage microsite universe with PHP or NodeJs backends. A stored cross-site scripting (XSS) vulnerability exists in versions prior to 26.0.0 due to improper sanitization of `<iframe>` elements. The application allows `javascript:` URIs in the `src` attribute, which are executed when a malicious page is viewed. This enables attackers to execute arbitrary JavaScript in the context of the victim’s browser and access sensitive data exposed to client-side scripts. Version 26.0.0 fixes the issue.
CVSS v4.0
Score 9.3critical
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-46396 is a critical stored cross-site scripting vulnerability (CWE-79) in haxtheweb's haxcms-nodejs product. Versions before 26.0.0 improperly sanitize <iframe> elements, permitting javascript: URIs in the src attribute. When a malicious page is viewed, this leads to execution of arbitrary JavaScript code in the victim's browser, potentially exposing sensitive client-side data. The vulnerability has a CVSS 4.0 score of 9.3, indicating high impact and exploitability. The issue is fixed in version 26.0.0.
Potential Impact
Successful exploitation allows attackers to execute arbitrary JavaScript in the context of the victim's browser, potentially leading to theft of sensitive data accessible to client-side scripts. This can compromise user sessions, data confidentiality, and integrity within affected applications.
Mitigation Recommendations
Upgrade to haxcms-nodejs version 26.0.0 or later, which fixes the vulnerability by properly sanitizing <iframe> elements and disallowing javascript: URIs in the src attribute. No other official remediation or temporary fixes are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-13T21:04:10.931Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a231d8ae29bf47b50a9834c
Added to database: 06/05/2026, 19:03:38 UTC
Last enriched: 06/13/2026, 09:33:52 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 49
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