Flo Forms – Easy Drag & Drop Form Builder <= 1.0.43 - Unauthenticated Stored Cross-Site Scripting via SVG Upload

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2025-13159
CVSS High (7.1)
Publicly Published November 20, 2025
Last Updated November 21, 2025
Researcher Moose Love
Description

The Flo Forms – Easy Drag & Drop Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via SVG file uploads in all versions up to, and including, 1.0.43. This is due to the plugin allowing SVG file uploads via an unauthenticated AJAX endpoint (`flo_form_submit`) without proper file content validation. This makes it possible for unauthenticated attackers to upload malicious SVG files containing JavaScript that executes when an administrator views the uploaded file in the WordPress admin interface, leading to potential full site compromise.

References

1 affected software package

Software Type Plugin
Software Slug flo-forms (view on wordpress.org)
Patched? No
Affected Version
  • <= 1.0.43
Patched Version
This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.
License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. License Detail.