WS Form LITE <= 1.12.18 - Unauthenticated Stored Cross-Site Scripting via Nested Form Field Values
- ID
- WPSEC-2026-2624
- Plugin
- WS Form LITE – Drag & Drop Contact Form Builder (ws-form)
- Affected
- all versions before 1.12.19
- Remediation
- Update to 1.12.19 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-11-05
- Attack surface
- WS Form LITE on WPSec AttackSurface
- Fix released
- Published
Description
The WS Form LITE plugin for WordPress is vulnerable to Stored Cross-Site Scripting via submitted form field values in all versions up to, and including, 1.12.18. This is due to insufficient input sanitization and output escaping: nested arrays or objects posted as field values were stored as-is, and the client-side esc_html function returned non-string values without encoding them. This makes it possible for unauthenticated attackers to submit a form with crafted nested values and inject arbitrary web scripts that execute when a user, such as an administrator viewing form submissions, accesses a page rendering those values.
References
- https://wpsec.com/vuln/WPSEC-2026-2624/
- https://plugins.svn.wordpress.org/ws-form/tags/1.12.19/
- https://wordpress.org/plugins/ws-form/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
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