File Upload Vulnerability in ProjeQtOr Project Management by ProjeQtOr
CVE-2021-47819

9.3CRITICAL

Key Information:

Vendor

Projeqtor

Status
Projeqtor Project Management
Vendor
CVE Published:
15 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47819?

ProjeQtOr Project Management version 9.1.4 is susceptible to a file upload vulnerability that enables unauthenticated guest users to upload malicious PHP files. This flaw occurs within the profile attachment section, where attackers can insert a PHP script capable of executing arbitrary system commands. By crafting a specific request parameter to access the uploaded file, an attacker can execute harmful operations, thereby compromising the integrity and security of the application.

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Affected Version(s)

ProjeQtOr Project Management 9.1.4

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-2021-47819 - Proof of Concept

References

https://www.exploit-db.com/exploits/49919
exploit
https://www.projeqtor.org
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

Temel Demir
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