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CVE-2026-67187

MEDIUM 5.1 CVSS 4.0
Published
October 28, 2026
Last modified
November 4, 2026
NVD status
Awaiting Analysis
Reported by
disclosure@vulncheck.com
Weakness
CWE-1236
CVSS vector
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Affected WordPress components

  • Ninja Forms – The Contact Form Builder That Grows With You Plugin · ninja-forms
    Confirmed match Active
    Before 3.15.4
    View on WordPress.org

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

  • Saturday Drive Ninja Forms — Before 3.15.4

References

  • wordpress.org https://wordpress.org/plugins/ninja-forms/#developers
  • www.vulncheck.com https://www.vulncheck.com/advisories/ninja-forms-wordpress-plugin-server-side-validation-bypass-via-list-fields
  • nvd.nist.gov Official NVD record