CVE-2025-53279
BaseFortify
Publication date: 2025-06-27
Last updated on: 2026-04-23
Assigner: Patchstack
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a Cross-Site Scripting (XSS) issue in the Popup addon for Ninja Forms plugin (versions up to 3.4). It allows attackers with contributor-level privileges to inject malicious scripts into web pages generated by the plugin. These scripts can execute in the browsers of visitors to the affected website, potentially causing redirects, displaying unwanted advertisements, or executing other harmful HTML payloads. The vulnerability is DOM-based and classified under OWASP Top 10 category A3: Injection. [1]
How can this vulnerability impact me? :
If exploited, this vulnerability can allow attackers to run malicious scripts on your website visitors' browsers. This can lead to unwanted redirects, display of malicious advertisements, or other harmful actions that compromise user experience and trust. Although the severity is considered low (CVSS 6.5), it can still result in reputational damage, potential data exposure, or further exploitation if combined with other vulnerabilities. Exploitation requires contributor-level access, and no official patch is currently available, though virtual patching is offered as a mitigation. [1]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
Detection involves monitoring the affected website for signs of malicious script injection or unusual redirects caused by the Cross Site Scripting vulnerability. Since the vulnerability allows injection of scripts that execute in visitors' browsers, inspecting HTTP requests and responses for suspicious payloads targeting the Popup addon for Ninja Forms (versions up to 3.4) is recommended. No specific commands are provided, but professional incident response or server-side malware scanning is advised as plugin-based malware scanners may be unreliable. [1]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include applying virtual patching (vPatching) offered by Patchstack, which provides automatic protection at the application level even without an official fix. Users should monitor their websites closely for signs of compromise and consider professional incident response if a breach is suspected. Since no official patch is available, virtual patching and vigilant monitoring are the primary recommended actions. [1]