GHSA-v3ph-2q5q-cg88: @haxtheweb/haxcms-nodejs Iframe Phishing vulnerability

1. GitHub Advisory Database
2. GitHub Reviewed
3. CVE-2025-49139

@haxtheweb/haxcms-nodejs Iframe Phishing vulnerability

Moderate severity GitHub Reviewed Published Jun 9, 2025 in haxtheweb/issues • Updated Jun 9, 2025

Package

npm @haxtheweb/haxcms-nodejs (npm)

Affected versions

< 11.0.0

Summary

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.

Affected Resources

• Operations.php:868
• https://<site>/<user>/system/api/saveNode

PoC

1. Set the URL in an iframe pointing to an attacker-controlled server running Responder

2. Once another user visits the site, they are prompted to sign in.

3. If a user inputs credentials, the username and password hash are outputted in Responder.

Impact

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.

References

• GHSA-v3ph-2q5q-cg88
• haxtheweb/haxcms-nodejs@5368eb9

Published to the GitHub Advisory Database

Jun 9, 2025