{"affected":[{"defaultStatus":"unaffected","product":"Ninja Forms","source":"CNA: VulnCheck","vendor":"Saturday Drive","versions":[{"lessThan":"3.15.4","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-67187","cwes":["CWE-1236"],"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.","epss":{"date":"2026-11-02","percentile":0.0655,"score":0.00172},"exploits":[],"kev":null,"metrics":[{"score":5.1,"severity":"medium","source":"CNA: VulnCheck","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","version":"4.0"},{"score":7.1,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","version":"3.1"}],"modifiedAt":1793710880814,"publishedAt":1793200756649,"references":[{"source":"CNA: VulnCheck","tags":["release-notes","patch"],"url":"https://wordpress.org/plugins/ninja-forms/#developers"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/ninja-forms-wordpress-plugin-server-side-validation-bypass-via-list-fields"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://wordpress.org/plugins/ninja-forms/#developers"}],"revision":"05d27621119c36c2739c620f38f0bc8868871866f6120cfc1d71d9e007a5f4a8","sources":[{"modifiedAt":1793710880814,"name":"CNA: VulnCheck","retrievedAt":1793714994623,"url":"https://www.cve.org/CVERecord?id=CVE-2026-67187"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793715000316,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-67187"}],"ssvc":{"assessedAt":1793710862972,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Ninja Forms WordPress Plugin < 3.15.4 Server-Side Validation Bypass via List Fields","updatedAt":1793715000316}