Ninja Forms WordPress Plugin < 3.15.4 Server-Side Validation Bypass via List Fields
Exact source revision recorded 28 Oct 2026 16:46:48 UTC. It does not establish the source's current position. Latest evidence.
cve-program · CVE-2026-67187
PublishedNinja 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.
- Source published
- 28 Oct 2026 15:19:16 UTC
- Source modified
- 28 Oct 2026 15:19:16 UTC
- Observed here
- 28 Oct 2026 16:46:48 UTC
- Source terms
- CVE Program Terms of Use
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CVSS 4.0 · 5.1 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
CVSS 3.1 · 7.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L