# CVE-2024-3740: cym1102 nginxWebUI reload exec deserialization

> Remote attackers can execute arbitrary code via unsafe deserialization in the reload function of nginxWebUI.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L`)
- **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:** 13 Apr 2024
- **Updated:** 12 Aug 2024
- **Also known as:** GHSA-6jpc-cjp9-9xgm

## What is CVE-2024-3740?

CVE-2024-3740 is a medium-severity unsafe deserialization vulnerability in cym1102 nginxWebUI, published on 13 Apr 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability, which was classified as critical, has been found in cym1102 nginxWebUI up to 3.9.9. This issue affects the function exec of the file /adminPage/conf/reload. The manipulation of the argument nginxExe leads to deserialization. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-260579.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2024-3740?

It affects 1 product.


Products: Cym1102 Nginxwebui.

## How do I fix CVE-2024-3740?

No fix has been published for CVE-2024-3740 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-3740 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-3740 exists.

## Other vulnerabilities in cym1102 nginxWebUI

- [CVE-2024-3738](https://insights.sbomify.com/CVE-2024-3738/): cym1102 nginxWebUI saveCmd handlePath certificate validation (high 7.3)
- [CVE-2024-3737](https://insights.sbomify.com/CVE-2024-3737/): cym1102 nginxWebUI addOver findCountByQuery path traversal (medium 6.3)
- [CVE-2024-3739](https://insights.sbomify.com/CVE-2024-3739/): cym1102 nginxWebUI upload os command injection (medium 6.3)
- [CVE-2026-2145](https://insights.sbomify.com/CVE-2026-2145/): cym1102 nginxWebUI Web Management check cross site scripting (medium 5.1)
- [CVE-2024-3736](https://insights.sbomify.com/CVE-2024-3736/): cym1102 nginxWebUI upload unrestricted upload (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-3740 and fix it if it is affected.

What it is: CVE-2024-3740 is a medium-severity unsafe deserialization vulnerability in cym1102 nginxWebUI, published on 13 Apr 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-3740 exists.

Affected product: cym1102 nginxWebUI. 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-2024-3740/ (Markdown: https://insights.sbomify.com/CVE-2024-3740/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-3740
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-3740
- OSV: https://osv.dev/vulnerability/CVE-2024-3740

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-3740/
Summaries are generated and may contain mistakes; the official description above is the record.