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CVE-2025-49137

Psu Haxcms-nodejs cross-site scripting (XSS)

8.5 HIGHPublic exploitEPSS 0.27%
  1. Published9 Jun 2025

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Affected products

Psu Haxcms-nodejs< 11.0.0
Psu Haxcms-php< 11.0.0

Remediation

Fixed in
Psu Haxcms-nodejs≥ 11.0.0
Psu Haxcms-php≥ 11.0.0

References

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Frequently asked

Is CVE-2025-49137 being actively exploited?

CVE-2025-49137 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.27%.

How severe is CVE-2025-49137?

CVE-2025-49137 has a CVSS 3.1 base score of 8.5, rated high. EPSS estimates a 0.27% probability of exploitation.

Which products are affected by CVE-2025-49137?

Affected products include Psu Haxcms-nodejs, Psu Haxcms-php.

How do I fix CVE-2025-49137?

Upgrade affected software to a fixed version, for example Psu Haxcms-nodejs 11.0.0, Psu Haxcms-php 11.0.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-49137 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.