File Upload Flaw in ImpressCMS by ImpressCMS
CVE-2022-50912

9.3CRITICAL

Key Information:

Vendor

Impresscms

Status
Impresscms
Vendor
CVE Published:
13 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2022-50912?

ImpressCMS 1.4.4 features a vulnerability that permits attackers to exploit weak extension sanitization in its file upload functionality. By utilizing alternative file extensions such as .php2, .php6, .php7, .phps, and .pht, an attacker can bypass established file upload restrictions. This can lead to the execution of arbitrary PHP code on the server, posing significant security risks to the affected sites.

Affected Version(s)

ImpressCMS 1.4.4

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2022-50912 - Proof of Concept

References

https://www.exploit-db.com/exploits/50890
exploit
https://www.impresscms.org/
product
https://github.com/ImpressCMS/impresscms
product

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Ünsal Furkan Harani (Zemarkhos)
.