CVE-2021-47819 CRITICAL

CVE-2021-47819: ProjeQtOr Project Management 9.1.4 - Remote Code Execution

Vendor Projeqtor
Product ProjeQtOr Project Management
Weakness CWE-434 · Unrestricted file upload
Published January 15, 2026
Last update March 5, 2026

CVSS base score

9.3/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS 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

What the vulnerability does

01Description

ProjeQtOr Project Management 9.1.4 contains a file upload vulnerability that allows guest users to upload malicious PHP files with arbitrary code execution capabilities. Attackers can upload a PHP script through the profile attachment section and execute system commands by accessing the uploaded file with a specially crafted request parameter.

Key dates

02Disclosure timeline

January 15, 2026 CVE published
March 5, 2026 Record updated