Ninja Forms Unauthenticated Stored Cross-Site Scripting via Repeatable Fieldset Submission Index
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Active
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Ninja Forms plugin for WordPress versions 3.10.4 through 3.14.9 contains an unauthenticated stored cross-site scripting vulnerability in the Repeatable Fieldset feature where parseSubmissionIndex() accepts arbitrary strings as submission indexes without numeric validation, and admin_form_element() interpolates the index directly into HTML without escaping. An unauthenticated attacker can submit a public form with a crafted repeater child key containing malicious script payloads, which execute in an administrator's browser when viewing submissions in the WordPress admin panel, enabling session-cookie theft, creation of administrator accounts, installation of malicious plugins, and arbitrary modification of site content.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 | 3.10.4 to before 3.14.9 | 3.14.9 | Patch available | CNA |
- Ninja Forms VendorSaturday Drive Affected 3.10.4 to before 3.14.9 Fixed in 3.14.9 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
- Fix · CNA Ninja Forms (Saturday Drive) Fixed in 3.14.9
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Saturday Drive Ninja Forms 3.14.9
5 records Highest priority Priority MEDIUM 2 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2026-46460 Ninja Forms Calculation and Payment Total Tampering via Fail-Open get_calc_value in ListSelect and ListRadio FieldsPriority MEDIUM 44
- TI-2026-46459 Ninja Forms Server-Side Validation Bypass via Client-Controlled Field Metadata Merge in AJAX Submission HandlerPriority LOW 37
- TI-2026-46457 Ninja Forms Cross-Site Network-Wide Data Deletion on WordPress Multisite via nf_delete_all_data AJAX ActionPriority LOW 37
Timeline
- 2026-10-02 Threatist record created from CVE-2026-65048
- 2026-10-03 Alias added: GHSA-895j-583x-29ww
References
Patch 1
Other 1
More Saturday Drive vulnerabilities
- 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
Sources
- CVE-2026-65048 · CVE Program
- CVE-2026-65048 · NVD
- FIRST EPSS
- GHSA-895j-583x-29ww · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences