# CVE-2025-13231: Server-side request forgery in Fancy Product Designer

> Unauthenticated attackers can exploit a race condition in Fancy Product Designer to perform Server-Side Request Forgery, accessing internal resources.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Dec 2025
- **Updated:** 8 Apr 2026
- **Also known as:** GHSA-hxc6-w4hr-c74r

## What is CVE-2025-13231?

CVE-2025-13231 is a medium-severity server-side request forgery vulnerability in radykal Fancy Product Designer, published on 16 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

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.

Weakness: CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization)

## Which versions are affected by CVE-2025-13231?


## How do I fix CVE-2025-13231?

No fix has been published for CVE-2025-13231 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-13231 being exploited?

There is no known exploitation of CVE-2025-13231 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-13231 and fix it if it is affected.

What it is: CVE-2025-13231 is a medium-severity server-side request forgery vulnerability in radykal Fancy Product Designer, published on 16 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-13231 in the wild and no public exploit code.

Affected product: radykal Fancy Product Designer. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-13231/ (Markdown: https://insights.sbomify.com/CVE-2025-13231/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-13231
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-13231
- OSV: https://osv.dev/vulnerability/CVE-2025-13231

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-13231/
Summaries are generated and may contain mistakes; the official description above is the record.