CVE-2026-67187
Ninja Forms WordPress Plugin < 3.15.4 Server-Side Validation Bypass via List Fields
- State
- Published
- Severity
- 5.1 Medium
- Published
- Oct 28, 2026
- Updated
- Oct 28, 2026
- Reserved
- Jul 28, 2026
Description
Ninja Forms plugin for WordPress before 3.15.4 contains an incomplete server-side validation vulnerability that allows unauthenticated attackers to submit arbitrary values to Checkbox List, Multi-Select List, Image List, Country, and State fields because NF_Abstracts_List falls through to a validate() method that only checks required-field presence. Attackers can submit crafted formula payloads through the unauthenticated nf_ajax_submit endpoint that bypass CSV escaping applied only to Textbox and Textarea fields, resulting in CSV injection when an administrator downloads and opens the exported submissions file.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.1 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L | VulnCheck |
| 3.1 | 7.1 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L | VulnCheck |
Weaknesses
- CWE-1236 Improper Neutralization of Formula Elements in a CSV File
Affected Products
| Product | Versions |
|---|---|
Ninja FormsSaturday Drive |
|
References
- WordPress Plugin Changelogrelease-notespatch
- VulnCheck Advisory: Ninja Forms WordPress Plugin < 3.15.4 Server-Side Validation Bypass via List Fieldsthird-party-advisory
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