CVE-2026-19857
Formidable Forms < 6.35 - Unauthenticated Arbitrary Shortcode Execution via [entry_key] Custom HTML Token
- State
- Published
- Severity
- 4.8 Medium
- Published
- Sep 16, 2026
- Updated
- Sep 16, 2026
- Reserved
- Aug 14, 2026
Description
The Formidable Forms WordPress plugin before 6.35 does not prevent a request-derived value from reaching the WordPress shortcode parser when it substitutes a supported token into a form's custom HTML, allowing unauthenticated visitors to have arbitrary shortcodes, with attacker-chosen attributes, executed server-side on any page displaying an affected form.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.8 Medium | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N | WPScan |
Weaknesses
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Affected Products
| Product | Versions |
|---|---|
Formidable FormsUnknown |
|
References
- https://wpscan.com/vulnerability/5ff439f4-aa99-4198-b908-0cf098656cf7/exploitvdb-entrytechnical-description
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