PT-2023-12478 · WordPress · The Flo Forms – Easy Drag & Drop Form Builder

Jerome Bruandet · Published 2023-06-07 · Updated 2025-09-02 · CVE-2021-4367

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions The Flo Forms – Easy Drag & Drop Form Builder plugin for WordPress versions up to, and including, 1.0.35

Description The issue is related to Stored Cross-Site Scripting via Options Change, which occurs when using the flo import forms options AJAX action. This is due to insufficient input sanitization and output escaping, along with missing capability checks. As a result, authenticated attackers, such as subscribers, can inject arbitrary web scripts into pages, which will execute when a user accesses an injected page.

Recommendations For versions up to, and including, 1.0.35, update to a version that addresses the insufficient input sanitization and output escaping issues, and includes proper capability checks to prevent arbitrary web script injection. As a temporary workaround, consider restricting access to the flo import forms options AJAX action to prevent exploitation.

Exploit

Fix

DoS

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-4367

Affected Products

The Flo Forms – Easy Drag & Drop Form Builder

References · 7

• 🔥 https://blog.nintechnet.com/zero-day-vulnerability-fixed-in-wordpress-flo-forms-plugin · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-4367 · Security Note
• https://osv.dev/vulnerability/CVE-2021-4367 · Vendor Advisory
• https://twitter.com/dailycve/status/1962926814294049226 · Twitter Post
• https://wpscan.com/vulnerability/b4a83501-c727-4c9b-a9a1-46b399ab0caa · Note
• https://t.me/cvenotify/52193 · Telegram Post
• https://wordfence.com/threat-intel/vulnerabilities/id/a175e103-ab89-404b-8736-94d0d93d6cf3?source=cve · Note