# Cool FormKit Lite – Advanced Form Builder for Elementor <= 2.7.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via Form Field Custom ID

- **ID:** WPSEC-2026-2061
- **Plugin:** Cool FormKit Lite – Advanced Form Builder for Elementor (`extensions-for-elementor-form`), https://wordpress.org/plugins/extensions-for-elementor-form/
- **Affected versions:** all versions before 2.7.10
- **Fixed in:** 2.7.10 (Update to 2.7.10 or later.)
- **Severity:** Medium 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-79
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-30)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/extensions-for-elementor-form
- **Fix released:** 2026-10-29
- **Published:** 2026-10-30
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2061/

## Description

The Cool FormKit Lite – Advanced Form Builder for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the form field Custom ID used by conditional logic in all versions up to, and including, 2.7.9. This is due to insufficient input sanitization and output escaping. The Custom ID is only restricted in the Elementor editor's client-side script and is not sanitized on the server. It is used as a key in the conditional-logic data, and the front-end script places that key into HTML strings that jQuery parses. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Also published later by wordfence as CVE-2026-118500.

## References

- https://wpsec.com/vuln/WPSEC-2026-2061/
- https://plugins.svn.wordpress.org/extensions-for-elementor-form/tags/2.7.10/
- https://wordpress.org/plugins/extensions-for-elementor-form/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2061/

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.