roxnor FundEngine Plugin up to 1.8.1 on WordPress REST Endpoint __return_true wfp_featured_video_url cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, has been found in roxnor FundEngine Plugin up to 1.8.1. Impacted is the function __return_true of the component REST Endpoint. This manipulation of the argument wfp_featured_video_url causes cross site scripting. This vulnerability is tracked as CVE-2026-76063. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in roxnor FundEngine Plugin up to 1.8.1. It has been declared as problematic. Affected by this vulnerability is the function __return_true of the component REST Endpoint. The manipulation of the argument wfp_featured_video_url with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. The summary by CVE is:

The FundEngine – Donation and Crowdfunding Platform plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wfp_featured_video_url' parameter in all versions up to, and including, 1.8.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The REST endpoint used to submit the video URL has its permission_callback set to __return_true, meaning any authenticated user — including those with Subscriber-level access — can reach the vulnerable code path.

It is possible to read the advisory at wordfence.com. This vulnerability is known as CVE-2026-76063 since 08/18/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• roxnor

Name

• FundEngine Plugin

Version

• 1.8.0
• 1.8.1

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CPE 2.2info

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