# CVE-2026-22241: Open eClass has Unrestricted File Upload that Leads to Remote Code Execution (RCE)

> Administrators can upload arbitrary files via theme import, leading to remote code execution on the server.

- **Severity:** High 7.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Jan 2026
- **Updated:** 23 Jan 2026

## What is CVE-2026-22241?

CVE-2026-22241 is a high-severity vulnerability in gunet openeclass, published on 8 Jan 2026. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

The Open eClass platform (formerly known as GUnet eClass) is a complete course management system. Prior to version 4.2, an arbitrary file upload vulnerability in the theme import functionality enables an attacker with administrative privileges to upload arbitrary files on the server's file system. The main cause of the issue is that no validation or sanitization of the file's present inside the zip archive. This leads to remote code execution on the web server. Version 4.2 patches the issue.

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

## Which versions are affected by CVE-2026-22241?

It affects 1 product.


Products: Openeclass Openeclass.

## How do I fix CVE-2026-22241?

No fix has been published for CVE-2026-22241 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-22241 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22241 exists.

Public exploit code:

- CVE-2026-22241 Exploit for GUnet Open eClass Unrestricted File Upload Leads to Remote Code Execution (RCE) (github_poc): https://github.com/Ashifcoder/CVE-2026-22241
- CVE-2026-22241 (github_poc): https://github.com/0xredash/CVE-2026-22241
- Lab Environment for CVE-2026-22241 (github_poc): https://github.com/CVEs-Labs/CVE-2026-22241
- GUnet OpenEclass E-learning platform < 4.2 - Remote Code Execution (RCE) (exploitdb)

## Other vulnerabilities in gunet openeclass

- [CVE-2024-38530](https://insights.sbomify.com/CVE-2024-38530/): Open eClass Platform allows Arbitrary File Upload in "modules/h5p/save.php" (critical 9.8)
- [CVE-2024-31777](https://insights.sbomify.com/CVE-2024-31777/): File upload in n/a (critical 9.8)
- [CVE-2024-26503](https://insights.sbomify.com/CVE-2024-26503/): File upload in n/a (critical 9.1)
- [CVE-2022-33116](https://insights.sbomify.com/CVE-2022-33116/): Path traversal in n/a (medium 6.5)
- [CVE-2017-7389](https://insights.sbomify.com/CVE-2017-7389/): Cross-site scripting in n/a (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-22241 and fix it if it is affected.

What it is: CVE-2026-22241 is a high-severity vulnerability in gunet openeclass, published on 8 Jan 2026. 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-2026-22241 exists.

Affected product: gunet openeclass. 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-2026-22241/ (Markdown: https://insights.sbomify.com/CVE-2026-22241/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-22241
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-22241
- OSV: https://osv.dev/vulnerability/CVE-2026-22241

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-22241/
Summaries are generated and may contain mistakes; the official description above is the record.