# CVE-2023-45751: WordPress Nexter Extension Plugin <= 2.0.3 is vulnerable to Remote Code Execution (RCE)

> Attackers can execute arbitrary code via improper code generation in the Nexter Extension plugin for WordPress.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Dec 2023
- **Updated:** 28 Apr 2026
- **Also known as:** GHSA-34jx-q9xg-rr5x

## What is CVE-2023-45751?

CVE-2023-45751 is a critical code injection vulnerability in POSIMYTH Nexter Extension, published on 29 Dec 2023. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Improper Control of Generation of Code ('Code Injection') vulnerability in POSIMYTH Nexter Extension.This issue affects Nexter Extension: from n/a through 2.0.3.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2023-45751?

It affects 1 product.


Products: Posimyth Nexter Extension.

## How do I fix CVE-2023-45751?

No fix has been published for CVE-2023-45751 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-45751 being exploited?

There is no known exploitation of CVE-2023-45751 in the wild and no public exploit code.

## Other vulnerabilities in POSIMYTH Nexter Extension

- [CVE-2023-45750](https://insights.sbomify.com/CVE-2023-45750/): WordPress Nexter Extension Plugin <= 2.0.3 is vulnerable to Cross Site Scripting (XSS) (high 7.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-45751 and fix it if it is affected.

What it is: CVE-2023-45751 is a critical code injection vulnerability in POSIMYTH Nexter Extension, published on 29 Dec 2023. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-45751 in the wild and no public exploit code.

Affected product: POSIMYTH Nexter Extension. 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-2023-45751/ (Markdown: https://insights.sbomify.com/CVE-2023-45751/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-45751
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-45751
- OSV: https://osv.dev/vulnerability/CVE-2023-45751

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-45751/
Summaries are generated and may contain mistakes; the official description above is the record.