CVE-2025-49137

Description

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.

CVSS v3.1 Score

8.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

CWE-80 CWE-80

CWE-87 CWE-87

Affected Products

Vendor	Product	Versions
psu	haxcms-nodejs	< 11.0.0
psu	haxcms-php	< 11.0.0

References

Advisories & Patches

https://github.com/haxtheweb/haxcms-php/commit/0dd3e98fe2fadd0793b667d4af2aac230980e0f8

Exploits

https://github.com/haxtheweb/issues/security/advisories/GHSA-2vc4-3hx7-v7v7 https://github.com/haxtheweb/issues/security/advisories/GHSA-2vc4-3hx7-v7v7

Frequently Asked Questions

What is CVE-2025-49137? +

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. It has a CVSS v3.1 base score of 8.5 (HIGH).

How severe is CVE-2025-49137? +

CVE-2025-49137 has a CVSS v3.1 score of 8.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-49137? +

CVE-2025-49137 affects products from psu, specifically: haxcms-nodejs, haxcms-php. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-49137? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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