Stored Cross-Site Scripting Vulnerability in ProjeQtor by ProjeQtor
CVE-2026-41466

5.1MEDIUM

Key Information:

Vendor

Projeqtor

Status
Projeqtor
Vendor
CVE Published:
27 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-41466?

ProjeQtor versions 7.0 to 12.4.3 are susceptible to a stored cross-site scripting (XSS) vulnerability due to inadequate input sanitization in the checkValidHtmlText() function within Security.php. This vulnerability allows adversaries to inject malicious scripts that can be stored and executed in the browsers of users viewing the affected content. The lack of proper sanitization means that certain patterns can evade detection, resulting in potential exploitation through methods such as embedding img tags with event handlers.

Affected Version(s)

ProjeQtor 7.0 <= 12.4.3

ProjeQtor 12.4.4

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-2026-41466 - Proof of Concept

References

https://damiri.fr/en/cves/CVE-2026-41466
technical-descriptionexploit
https://gryfman.fr/cves/CVE-2026-41466
technical-descriptionexploit
https://www.projeqtor.com
product

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Yassine Damiri
Noé Susset
.