CVE-2025-49137

Public Exploit
Hax CMS Stored Cross-Site Scripting vulnerability

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.

Category

8.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.05%
Third-Party Advisory github.com
Affected: haxtheweb issues
Published at:
Updated at:

References

Link Tags
https://github.com/haxtheweb/issues/security/advisories/GHSA-2vc4-3hx7-v7v7 third party advisory issue tracking exploit
https://github.com/haxtheweb/haxcms-php/commit/0dd3e98fe2fadd0793b667d4af2aac230980e0f8 patch

Frequently Asked Questions

What is the severity of CVE-2025-49137?
CVE-2025-49137 has been scored as a high severity vulnerability.
How to fix CVE-2025-49137?
To fix CVE-2025-49137, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-49137 being actively exploited in the wild?
It is possible that CVE-2025-49137 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-49137?
CVE-2025-49137 affects haxtheweb issues.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.