# CVE-2024-3431: EyouCMS Backend deserialization

> Remote attackers with admin permissions can achieve code execution via unsafe deserialization in the EyouCMS backend field editing module.

- **Severity:** Medium 4.7 (`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Apr 2024
- **Updated:** 20 Aug 2024
- **Also known as:** GHSA-g6h9-ww5f-gjp4

## What is CVE-2024-3431?

CVE-2024-3431 is a medium-severity unsafe deserialization vulnerability in Eyoucms Eyoucms, published on 7 Apr 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

A vulnerability was found in EyouCMS 1.6.5. It has been declared as critical. This vulnerability affects unknown code of the file /login.php?m=admin&c=Field&a=channel_edit of the component Backend. The manipulation of the argument channel_id leads to deserialization. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-259612. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2024-3431?

It affects 1 product.


Products: Eyoucms Eyoucms.

## How do I fix CVE-2024-3431?

No fix has been published for CVE-2024-3431 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-3431 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-3431 exists.

## Other vulnerabilities in Eyoucms Eyoucms

- [CVE-2023-42286](https://insights.sbomify.com/CVE-2023-42286/): File upload in n/a (critical 9.8)
- [CVE-2022-26273](https://insights.sbomify.com/CVE-2022-26273/): Business logic in n/a (critical 9.8)
- [CVE-2022-26279](https://insights.sbomify.com/CVE-2022-26279/): Missing authorization in n/a (critical 9.8)
- [CVE-2020-24000](https://insights.sbomify.com/CVE-2020-24000/): SQL injection in n/a (critical 9.8)
- [CVE-2021-39497](https://insights.sbomify.com/CVE-2021-39497/): Server-side request forgery in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-3431 and fix it if it is affected.

What it is: CVE-2024-3431 is a medium-severity unsafe deserialization vulnerability in Eyoucms Eyoucms, published on 7 Apr 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-3431 exists.

Affected product: Eyoucms Eyoucms. 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-2024-3431/ (Markdown: https://insights.sbomify.com/CVE-2024-3431/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-3431
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-3431
- OSV: https://osv.dev/vulnerability/CVE-2024-3431

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-3431/
Summaries are generated and may contain mistakes; the official description above is the record.