CVE-2026-34007**RCE** Unsanitized `X-Forwarded-For` header passed to `shell_exec()` via broken IP validation fallback in `getClientIP()`

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

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

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