CVE-2025-5398: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in kstover Ninja Forms – The Contact Form Builder That Grows With You
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.
AI Analysis
Technical Summary
CVE-2025-5398 is a stored cross-site scripting vulnerability in the Ninja Forms WordPress plugin (versions up to 3.10.2.1). The issue stems from improper neutralization of user input in the plugin's templating engine, specifically insufficient output escaping of user-supplied data. Authenticated attackers with contributor-level privileges or higher can inject arbitrary JavaScript code that executes in the context of users viewing the compromised pages. This vulnerability can lead to information disclosure or session hijacking but does not affect availability. The CVSS 3.1 base score is 6.4 (medium severity), reflecting network attack vector, low attack complexity, and limited privileges required.
Potential Impact
An attacker with contributor-level or higher access can inject persistent malicious scripts into pages generated by the Ninja Forms plugin. These scripts execute in the browsers of users who visit the infected pages, potentially leading to information disclosure or user session compromise. The vulnerability does not impact system availability. There are no reports of exploitation in the wild. The impact is limited to confidentiality and integrity of user data within the affected WordPress environment.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, restrict contributor-level access to trusted users only and consider disabling or limiting use of the affected plugin. Monitor vendor communications for updates on patches or official mitigations.
CVE-2025-5398: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in kstover Ninja Forms – The Contact Form Builder That Grows With You
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-5398 is a stored cross-site scripting vulnerability in the Ninja Forms WordPress plugin (versions up to 3.10.2.1). The issue stems from improper neutralization of user input in the plugin's templating engine, specifically insufficient output escaping of user-supplied data. Authenticated attackers with contributor-level privileges or higher can inject arbitrary JavaScript code that executes in the context of users viewing the compromised pages. This vulnerability can lead to information disclosure or session hijacking but does not affect availability. The CVSS 3.1 base score is 6.4 (medium severity), reflecting network attack vector, low attack complexity, and limited privileges required.
Potential Impact
An attacker with contributor-level or higher access can inject persistent malicious scripts into pages generated by the Ninja Forms plugin. These scripts execute in the browsers of users who visit the infected pages, potentially leading to information disclosure or user session compromise. The vulnerability does not impact system availability. There are no reports of exploitation in the wild. The impact is limited to confidentiality and integrity of user data within the affected WordPress environment.
Mitigation Recommendations
No official patch or remediation is currently available for this vulnerability. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, restrict contributor-level access to trusted users only and consider disabling or limiting use of the affected plugin. Monitor vendor communications for updates on patches or official mitigations.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-05-30T20:44:25.820Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 685e65beca1063fb8756abf2
Added to database: 6/27/2025, 9:34:54 AM
Last enriched: 4/9/2026, 5:34:25 PM
Last updated: 5/10/2026, 6:11:40 AM
Views: 111
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