# CVE-2023-51406: WordPress FastDup Plugin <= 2.1.7 is vulnerable to Sensitive Data Exposure

> An attacker can access sensitive information from the FastDup WordPress migration plugin without authorization.

- **Severity:** Medium 5.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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:** 8 Jan 2024
- **Updated:** 28 Apr 2026
- **Also known as:** GHSA-4gcw-p8mg-cmch

## What is CVE-2023-51406?

CVE-2023-51406 is a medium-severity vulnerability in Ninja Team FastDup – Fastest WordPress Migration & Duplicator, published on 8 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Ninja Team FastDup – Fastest WordPress Migration & Duplicator.This issue affects FastDup – Fastest WordPress Migration & Duplicator: from n/a through 2.1.7.

Weakness: CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor)

## Which versions are affected by CVE-2023-51406?

It affects 1 product.


Products: Ninjateam Fastdup.

## How do I fix CVE-2023-51406?

No fix has been published for CVE-2023-51406 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-51406 being exploited?

There is no known exploitation of CVE-2023-51406 in the wild and no public exploit code.

## Other vulnerabilities in Ninja Team FastDup – Fastest WordPress Migration & Duplicator

- [CVE-2023-6592](https://insights.sbomify.com/CVE-2023-6592/): Information disclosure in FastDup (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-51406 and fix it if it is affected.

What it is: CVE-2023-51406 is a medium-severity vulnerability in Ninja Team FastDup – Fastest WordPress Migration & Duplicator, published on 8 Jan 2024. 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-2023-51406 in the wild and no public exploit code.

Affected product: Ninja Team FastDup – Fastest WordPress Migration & Duplicator. 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-2023-51406/ (Markdown: https://insights.sbomify.com/CVE-2023-51406/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-51406
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-51406
- OSV: https://osv.dev/vulnerability/CVE-2023-51406

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-51406/
Summaries are generated and may contain mistakes; the official description above is the record.