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CVE-2021-4367

MEDIUM 5.4 CVSS 3.1
Published
June 7, 2023
Last modified
June 17, 2026
NVD status
Modified
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Description

The Flo Forms – Easy Drag & Drop Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Options Change by using the flo_import_forms_options AJAX action in versions up to, and including, 1.0.35 due to insufficient input sanitization and output escaping along with missing capability checks. This makes it possible for authenticated attackers, like subscribers, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • flothemesplugins Flo Forms – Easy Drag & Drop Form Builder — Up to and including 1.0.35
  • flothemes flo_forms — Up to and including 1.0.35

References

  • blog.nintechnet.com https://blog.nintechnet.com/zero-day-vulnerability-fixed-in-wordpress-flo-forms-plugin/ Exploit
  • wpscan.com https://wpscan.com/vulnerability/b4a83501-c727-4c9b-a9a1-46b399ab0caa Third Party Advisory
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/a175e103-ab89-404b-8736-94d0d93d6cf3?source=cve Third Party Advisory
  • nvd.nist.gov Official NVD record