Stored Cross-Site Scripting Vulnerability in ProjeQtor by ProjeQtor
CVE-2026-41467

5.1MEDIUM

Key Information:

Vendor

Projeqtor

Status
Projeqtor
Vendor
CVE Published:
27 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-41467?

ProjeQtor versions from 7.0 to 12.4.3 feature a stored cross-site scripting vulnerability that arises from inadequate restrictions on file uploads. Specifically, the checkValidFileName() function allows authenticated users to upload HTML files containing malicious JavaScript. As a result, users accessing the URLs of these uploaded files unknowingly execute the embedded scripts in their browsers, potentially leading to a wide range of exploit scenarios such as data theft, session hijacking, or unauthorized actions.

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-2026-41467 - Proof of Concept

References

https://damiri.fr/en/cves/CVE-2026-41467
technical-descriptionexploit
https://gryfman.fr/cves/CVE-2026-41467
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
.