CVE-2025-49139: haxcms-php — Exploit & Fix

Description

HAX CMS PHP allows users to manage their microsite universe with a PHP backend. Prior to version 11.0.0, in the HAX site editor, users can create a website block to load another site in an iframe. The application allows users to supply a target URL in the website block. When the HAX site is visited, the client's browser will query the supplied URL. An authenticated attacker can create a HAX site with a website block pointing at an attacker-controlled server running Responder or a similar tool. The attacker can then conduct a phishing attack by convincing another user to visit their malicious HAX site to harvest credentials. Version 11.0.0 contains a patch for the issue.

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CVSS v3.1 Score

5.3

MEDIUM

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

Weakness Type (CWE)

CWE-1021 CWE-1021

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-nodejs/commit/5368eb9b278ca47cd9a83b8d3e6216375615b8f5

Exploits

https://github.com/haxtheweb/issues/security/advisories/GHSA-v3ph-2q5q-cg88 https://github.com/haxtheweb/issues/security/advisories/GHSA-v3ph-2q5q-cg88

Frequently Asked Questions

What is CVE-2025-49139? +

HAX CMS PHP allows users to manage their microsite universe with a PHP backend. Prior to version 11.0.0, in the HAX site editor, users can create a website block to load another site in an iframe. The application allows users to supply a target URL in the website block. When the HAX site is visited, the client's browser will query the supplied URL. An authenticated attacker can create a HAX site with a website block pointing at an attacker-controlled server running Responder or a similar tool. The attacker can then conduct a phishing attack by convincing another user to visit their malicious HAX site to harvest credentials. Version 11.0.0 contains a patch for the issue. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-49139? +

CVE-2025-49139 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-49139? +

CVE-2025-49139 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-2025-49139? +

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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