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
The vulnerability CVE-2026-46396 affects haxtheweb's haxcms-nodejs product before version 26.0.0. It is a stored cross-site scripting (CWE-79) flaw caused by improper neutralization of input during web page generation. Specifically, the application fails to sanitize <iframe> elements properly, permitting javascript: URIs in the src attribute. When a user views a maliciously crafted page, the embedded JavaScript executes in their browser context, leading to potential data exposure. The CVSS 4.0 base score is 9.3, indicating critical severity. The issue is resolved in version 26.0.0.
Potential Impact
Successful exploitation allows attackers to execute arbitrary JavaScript in the context of the victim's browser, which can lead to theft of sensitive information accessible to client-side scripts. This can compromise user data confidentiality and integrity within the affected application environment.
Mitigation Recommendations
Upgrade haxcms-nodejs to version 26.0.0 or later, where this vulnerability is fixed. Since the vendor advisory indicates the issue is resolved in this version, applying this official fix is the recommended remediation. Patch status is confirmed by the vendor's versioning information.
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
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-46396 affects haxtheweb's haxcms-nodejs product before version 26.0.0. It is a stored cross-site scripting (CWE-79) flaw caused by improper neutralization of input during web page generation. Specifically, the application fails to sanitize <iframe> elements properly, permitting javascript: URIs in the src attribute. When a user views a maliciously crafted page, the embedded JavaScript executes in their browser context, leading to potential data exposure. The CVSS 4.0 base score is 9.3, indicating critical severity. The issue is resolved in version 26.0.0.
Potential Impact
Successful exploitation allows attackers to execute arbitrary JavaScript in the context of the victim's browser, which can lead to theft of sensitive information accessible to client-side scripts. This can compromise user data confidentiality and integrity within the affected application environment.
Mitigation Recommendations
Upgrade haxcms-nodejs to version 26.0.0 or later, where this vulnerability is fixed. Since the vendor advisory indicates the issue is resolved in this version, applying this official fix is the recommended remediation. Patch status is confirmed by the vendor's versioning information.
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: 6/5/2026, 7:03:38 PM
Last enriched: 6/5/2026, 7:18:50 PM
Last updated: 6/6/2026, 4:22:17 AM
Views: 8
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