CVE-2026-47790: CWE-79 in QNAP Systems Inc. QuFTP Service
Description
A cross-site scripting (XSS) vulnerability has been reported to affect QuFTP Service. If a remote attacker gains a user account, they can then exploit the vulnerability to inject malicious code. We have already fixed the vulnerability in the following version: QuFTP Service 1.4.6 and later QuFTP Service 1.5.5 and later QuFTP Service 1.6.5 and later
CVSS v4.0
Score 6.3medium
Affected software
QNAP Systems Inc.
QuFTP Service
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability is a CWE-79 cross-site scripting issue affecting QNAP's QuFTP Service. An attacker who has obtained a user account can exploit this vulnerability to inject malicious scripts. The vulnerability is addressed in versions 1.4.6+, 1.5.5+, and 1.6.5+ of the QuFTP Service.
Potential Impact
Successful exploitation requires a user account and allows injection of malicious code via XSS, which can lead to limited confidentiality impact and requires user interaction. The CVSS 4.0 score is 6.3 (medium severity), reflecting network attack vector, low complexity, no privileges required beyond user account, and user interaction needed.
Mitigation Recommendations
Upgrade QuFTP Service to version 1.4.6 or later, 1.5.5 or later, or 1.6.5 or later as appropriate. These versions contain the official fix for this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- qnap
- Date Reserved
- 2026-05-20T07:19:15.800Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad0a18d2cdf04f65621d7b1
Added to database: 10/15/2026, 09:49:01 UTC
Last enriched: 10/15/2026, 10:03:50 UTC
Last updated: 10/15/2026, 19:00:27 UTC
Views: 17
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