CVE-2026-34007

**RCE** Unsanitized `X-Forwarded-For` header passed to `shell_exec()` via broken IP validation fallback in `getClientIP()`

State: Published
Severity: 6.9 Medium
Published: Oct 15, 2026
Updated: Oct 15, 2026
Reserved: Mar 25, 2026

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Description

An OS command injection vulnerability has been reported to affect Notes Station 3. If exploited, the vulnerability could allow remote attackers to execute arbitrary commands.

We have already fixed the vulnerability in the following version: Notes Station 3 3.9.11 and later

Scores

CVSS	Score	Vector	Source
4.0	6.9 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N	qnap

Weaknesses

CWE-78

Affected Products

Product	Versions
Notes Station 3QNAP Systems Inc.	3.9.x to before 3.9.11Affected

References

https://www.qnap.com/en/app-release-notes?keyword=Notes%20Station%203&app=NotesStation3&product-line=nasrelease-notes

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