Fancy Product Designer Plugin up to 6.4.8 on WordPress getimagesize url server-side request forgery

Summaryinfo

A vulnerability classified as critical has been found in Fancy Product Designer Plugin up to 6.4.8 on WordPress. Impacted is the function getimagesize. This manipulation of the argument url causes server-side request forgery. This vulnerability is tracked as CVE-2025-13231. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in Fancy Product Designer Plugin up to 6.4.8 on WordPress. It has been declared as critical. Affected by this vulnerability is the function getimagesize. The manipulation of the argument url with an unknown input leads to a server-side request forgery vulnerability. The CWE definition for the vulnerability is CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The Fancy Product Designer plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 6.4.8. This is due to a time-of-check/time-of-use (TOCTOU) race condition in the 'url' parameter of the fpd_custom_uplod_file AJAX action. The plugin validates the URL by calling getimagesize() first, then later retrieves the same URL using file_get_contents(). This makes it possible for unauthenticated attackers to exploit the timing gap to perform SSRF attacks by serving a valid image during validation, then changing the response to redirect to arbitrary internal or external URLs during the actual fetch.

The advisory is shared at wordfence.com. This vulnerability is known as CVE-2025-13231. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 12/16/2025).

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-203530). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• WordPress Plugin

Name

• Fancy Product Designer Plugin

Version

• 6.4.0
• 6.4.1
• 6.4.2
• 6.4.3
• 6.4.4
• 6.4.5
• 6.4.6
• 6.4.7
• 6.4.8

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• 🔒
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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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