TI-2026-82006 Aliases CVE-2026-67187 GHSA-f833-cw2q-6hm3

Server-side validation bypass in Ninja Forms list fields enables CSV injection

LOW 22CWE-1236Published 2026-10-28 · Updated 2026-11-03

Key facts

Attack vector: Network
Privileges required: None
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · None · None
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Ninja Forms plugin for WordPress before 3.15.4 contains incomplete server-side validation that lets unauthenticated attackers submit arbitrary values to Checkbox List, Multi-Select List, Image List, Country, and State fields. Attackers can submit crafted formula payloads through the nf_ajax_submit endpoint that bypass CSV escaping applied only to Textbox and Textarea fields, resulting in CSV injection (CWE-1236) when an administrator downloads and opens the exported submissions file.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00172 6th percentileScored 2026-11-07

Fix Fixed Ninja Forms (Saturday Drive): 3.15.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Saturday Drive	Ninja Forms	before 3.15.4	3.15.4	Patch available	CNA

Ninja Forms VendorSaturday Drive Affected before 3.15.4 Fixed in 3.15.4 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:ninjaforms:ninja_forms::::::::	—	—	Saturday Drive

cpe:2.3:a:ninjaforms:ninja_forms:*:*:*:*:*:*:*:* Versions — — ·Saturday Drive

Remediation

Update Ninja Forms to version 3.15.4 or later, which fixes the flaw. The sources list no advisory identifier for this fix.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Fix · CNA Ninja Forms (Saturday Drive) Fixed in 3.15.4

Timeline

2026-10-28 Threatist record created from CVE-2026-67187
2026-10-28 Alias added: GHSA-f833-cw2q-6hm3
2026-11-03 CISA SSVC decision points changed

References

Patch 1

WordPress Plugin Changelog

TI-2026-00527 Ninja Forms - File Upload <= 3.3.26 - Unauthenticated Arbitrary File Upload CVSS 3.1CRITICAL 9.8
TI-2025-08325 Ninja-forms < 3.11.1 - Unauthenticated PHP Objection CVSS 3.1CRITICAL 9.8
TI-2016-01107 The Ninja Forms plugin before 2.9.42.1 for WordPress allows remote attackers to conduct… CVSS 3.0CRITICAL 9.8
TI-2023-19777 WordPress Ninja Forms plugin <= 3.6.25 - Subscriber+ Broken Access Control vulnerability CVSS 3.1HIGH 8.8
TI-2022-00792 Ninja Forms - File Uploads Extension <= 3.3.0 - Arbitrary File Upload CVSS 3.1CRITICAL 9.8
TI-2022-02691 NinjaForms < 3.6.13 - Admin+ PHP Objection Injection CVSS 3.1HIGH 7.2

See all 94 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences