CVE-2026-47790

Privilege Escalation via QuFTP Log-based XSS

Published Oct 15, 2026 CVSS 4.0 · 6.3 Medium EPSS < 1% KEV · Not listed
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

Remediation

Vendor Solution

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

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Qnap Systems
Qnap Systems quftp Service
Vendors & Products Qnap Systems
Qnap Systems quftp Service
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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
Title Privilege Escalation via QuFTP Log-based XSS
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
qnap
Published
Updated
Oct 19, 2026, 8:06 AM
Reserved
May 20, 2026, 7:19 AM
Status
Awaiting Analysis
Published
Oct 15, 2026, 10:17 AM
Modified
Oct 15, 2026, 4:32 PM