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ProjeQtor CVE-2026-41467

| EUVD-2026-25870 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-04-27 VulnCheck
XSS File Upload
5.1
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

4
PoC Detected
Apr 27, 2026 - 18:35 vuln.today
Public exploit code
CVSS changed
Apr 27, 2026 - 16:22 NVD
5.4 (MEDIUM) 5.1 (MEDIUM)
EUVD ID Assigned
Apr 27, 2026 - 15:30 euvd
EUVD-2026-25870
CVE Published
Apr 27, 2026 - 15:11 nvd
MEDIUM 5.1

DescriptionNVD

ProjeQtor versions 7.0 through 12.4.3 contain a stored cross-site scripting vulnerability in the file upload functionality where the checkValidFileName() function fails to restrict HTML and HTM file uploads. Authenticated attackers can upload HTML files containing arbitrary JavaScript through the image upload or attachment endpoints, and any user accessing the uploaded file URL will execute the embedded JavaScript in their browser.

Analysis

ProjeQtor versions 7.0 through 12.4.3 contain a stored cross-site scripting vulnerability in the file upload functionality where the checkValidFileName() function fails to restrict HTML and HTM file uploads. Authenticated attackers can upload HTML files containing arbitrary JavaScript through the image upload or attachment endpoints, and any user accessing the uploaded file URL will execute the embedded JavaScript in their browser.

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CVE-2026-41467 vulnerability details – vuln.today
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