CVE-2026-22895Network attack vector

Application data access via undisclosed XSS mechanism

Published Mar 20, 2026 · Updated Mar 20, 2026

Cross-site scripting in QNAP QuFTP Service 1.4.x, 1.5.x, and 1.6.x allows remote authenticated users to read application data. QNAP has not disclosed the affected web interface, input field, rendering path, or missing neutralization operation that permits script execution. Exploitation requires an administrator account and passive interaction by another user; successful script execution can bypass security controls or expose application data.

CVSS severity4.8
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in QNAP QuFTP Service 1.4.x, 1.5.x, and 1.6.x allows remote authenticated users to read application data. QNAP has not disclosed the affected web interface, input field, rendering path, or missing neutralization operation that permits script execution. Exploitation requires an administrator account and passive interaction by another user; successful script execution can bypass security controls or expose application data.

The record

CVE
CVE-2026-22895
Published
Mar 20, 2026
Updated
Mar 20, 2026
Vendor
Linn Products Limited
Product
QuFTP Service
Classifications
CWE-79
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.4.x <1.4.3
  2. Affected versionversion=1.5.x <1.5.2
  3. Affected versionversion=1.6.x <1.6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Linn Products Limited · QuFTP Serviceversion=1.4.x <1.4.3; version=1.5.x <1.5.2; version=1.6.x <1.6.2

Published CVSS scores

6.2QNAP Systems, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N
4.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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