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Ninja Forms CVE-2025-5398

| EUVDEUVD-2025-28541 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2025-06-27 security@wordfence.com
6.4
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
6.4 MEDIUM
AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

4
EUVD ID Assigned
Mar 16, 2026 - 00:16 euvd
EUVD-2025-28541
Analysis Generated
Mar 16, 2026 - 00:16 vuln.today
Patch released
Mar 16, 2026 - 00:16 nvd
Patch available
CVE Published
Jun 27, 2025 - 10:15 nvd
MEDIUM 6.4

DescriptionCVE.org

The Ninja Forms - The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the use of a templating engine in all versions up to, and including, 3.10.2.1 due to insufficient output escaping on user data passed through the template. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Analysis

The Ninja Forms - The Contact Form Builder That Grows With You plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the use of a templating engine in all versions up to, and including, 3.10.2.1 due to insufficient output escaping on user data passed through the template. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Technical ContextAI

Cross-site scripting (XSS) allows injection of client-side scripts into web pages viewed by other users due to insufficient output encoding.

RemediationAI

A vendor patch is available — apply it immediately. Encode all user-supplied output contextually (HTML, JS, URL). Implement Content Security Policy (CSP) headers. Use HTTPOnly and Secure cookie flags.

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An open redirect in the Ninja Forms plugin before 3.3.19.1 for WordPress allows Remote Attackers to redirect a user via

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XSS in the Ninja Forms plugin before 3.3.18 for WordPress allows Remote Attackers to execute JavaScript via the includes

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CVE-2025-5398 vulnerability details – vuln.today

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