QID 150389

Date Published: 2021-11-22

QID 150389: WordPress Ninja-Forms Plugin - Authenticated Open Redirect (CVE-2021-24165)

Ninja Forms is a free form builder plugin for WordPress, it provides users the ability to create custom forms using drag and drop capabilities.

In affected versions of Ninja Forms WordPress plugin a Open redirect vulnerability exists due to unvalidated user input supplied to redirect parameter.

Affected versions:
Ninja Forms versions prior to 3.4.34

QID Detection Logic (Authenticated):
This QID sends a HTTP GET request to "wp-admin/admin-ajax.php" with client_id, redirect and AJAX action parameters and based on the response confirms if the target is vulnerable.

Successful exploitation could allow attackers to trick a user into visiting a specially crafted link which would redirect them to an arbitrary malicious external URL.

CVSS V3 rated as High - 6.1 severity.

CVSS V2 rated as Medium - 5.8 severity.

Solution

Customers are advised to upgrade to Ninja Forms version 3.4.34 or later versions to remediate this vulnerability. For more information related to this vulnerability please refer Wordfence Blog

Vendor References

Ninja Forms External Advisory - www.wordfence.com/blog/2021/02/one-million-sites-affected-four-severe-vulnerabilities-patched-in-ninja-forms/

CVEs related to QID 150389

CVE-2021-24165 |

Software Advisories

Advisory ID	Software	Component	Link
Ninja Forms			ninjaforms.com/docs/installation/

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