Vulnerability in Saturday Drive Ninja Forms
CVE-2026-67187
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.
Published .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- wordpress.org/plugins/ninja-forms/ (release-notes, patch)
- www.vulncheck.com/advisories/ninja-forms-wordpress-plugin-server-side-validatio… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-67187?
- CVE-2026-67187 is a high-severity vulnerability in Saturday Drive Ninja Forms, classified under Improper Neutralization of Formula Elements in a CSV File. CVSS score: 7.1/10. Published 2026-10-28.
- How severe is CVE-2026-67187?
- High severity. CVSS v3 base score is 7.1 out of 10.