# CVE-2025-13646: Modula 2.13.1 - 2.13.2 - Authenticated (Author+) Arbitrary File Upload via Race Condition

> Authenticated attackers can upload arbitrary files via a race condition in the Modula Image Gallery plugin, potentially leading to remote code execution.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 3 Dec 2025
- **Updated:** 3 Dec 2025
- **Also known as:** GHSA-45f2-8284-5w23

## What is CVE-2025-13646?

CVE-2025-13646 is a high-severity vulnerability in wpchill Image Gallery – Photo Grid & Video Gallery, published on 3 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

The Modula Image Gallery plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'ajax_unzip_file' function in versions 2.13.1 to 2.13.2. This makes it possible for authenticated attackers, with Author-level access and above, to upload arbitrary files with race condition on the affected site's server which may make remote code execution possible.

Weakness: CWE-434 (Unrestricted Upload of File with Dangerous Type)

## Which versions are affected by CVE-2025-13646?

It affects 1 product.


Products: Wpchill Modula Image Gallery.

## How do I fix CVE-2025-13646?

No fix has been published for CVE-2025-13646 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-13646 being exploited?

There is no known exploitation of CVE-2025-13646 in the wild and no public exploit code.

## Other vulnerabilities in wpchill Image Gallery – Photo Grid & Video Gallery

- [CVE-2024-12853](https://insights.sbomify.com/CVE-2024-12853/): Modula Image Gallery <= 2.11.10 - Authenticated (Author+) Arbitrary File Upload (high 8.8)
- [CVE-2025-13645](https://insights.sbomify.com/CVE-2025-13645/): Modula 2.13.1 - 2.13.2 - Authenticated (Author+) Arbitrary File Deletion (high 7.2)
- [CVE-2024-9416](https://insights.sbomify.com/CVE-2024-9416/): Cross-site scripting in Modula Image Gallery – Photo Grid & Video Gallery (medium 6.4)
- [CVE-2020-9003](https://insights.sbomify.com/CVE-2020-9003/): Cross-site scripting in n/a (medium 5.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-13646 and fix it if it is affected.

What it is: CVE-2025-13646 is a high-severity vulnerability in wpchill Image Gallery – Photo Grid & Video Gallery, published on 3 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-13646 in the wild and no public exploit code.

Affected product: wpchill Image Gallery – Photo Grid & Video Gallery. 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-2025-13646/ (Markdown: https://insights.sbomify.com/CVE-2025-13646/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-13646
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-13646
- OSV: https://osv.dev/vulnerability/CVE-2025-13646

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-13646/
Summaries are generated and may contain mistakes; the official description above is the record.