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CVE-2021-4367
Flo Forms – Easy Drag & Drop Form Builder <= 1.0.35 - Options Change to Stored Cross-Site Scripting
Medium6.4EPSS 0.67%
- Published
- Updated
- Reserved
- Assigned by
- Wordfence
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | Medium6.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N |
| NVDNVD · Modified | 3.1 | Medium5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.67% · top 48% of all CVEs (5 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.4.
Weakness
Affected products
flothemesplugins · Flo Forms – Easy Drag & Drop Form Builder
- affected ≤ 1.0.35
References (3)
- https://www.wordfence.com/threat-intel/vulnerabilities/id/a175e103-ab89-404b-8736-94d0d93d6cf3?source=cve (opens in a new tab)x_transferred
- https://blog.nintechnet.com/zero-day-vulnerability-fixed-in-wordpress-flo-forms-plugin/ (opens in a new tab)x_transferred
- https://wpscan.com/vulnerability/b4a83501-c727-4c9b-a9a1-46b399ab0caa (opens in a new tab)x_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-4367)Record last updated .