# cformsII <= 15.1.4 - Unauthenticated Reflected Cross-Site Scripting via Form Field Values in Success Message

- **ID:** WPSEC-2026-2529
- **Plugin:** cformsII (`cforms2`), https://wordpress.org/plugins/cforms2/
- **Affected versions:** all versions before 15.2
- **Fixed in:** 15.2 (Update to 15.2 or later.)
- **Severity:** Medium 4.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-11-04)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/cforms2
- **Fix released:** 2026-11-03
- **Published:** 2026-11-04
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2529/

## Description

The cformsII plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via submitted form field values in all versions up to, and including, 15.1.4, due to field values substituted into {field} variables of the success message being output without escaping, combined with missing nonce validation on direct (non-AJAX) form submissions. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in a victim's browser if the form's success message uses a field variable and they can trick the victim into performing an action such as visiting a page that auto-submits a crafted form.

## References

- https://wpsec.com/vuln/WPSEC-2026-2529/
- https://plugins.svn.wordpress.org/cforms2/tags/15.2/
- https://wordpress.org/plugins/cforms2/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2529/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.