[ CVE-2026-39991 · Published 15 Oct 2026 ]
Vulnerability in QNAP Systems Inc. Notes Station 3
CVSS 4.8
EPSS <1%No fix listed yet
[ Description ]Official description
A cross-site scripting (XSS) vulnerability has been reported to affect Notes Station 3. 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: Notes Station 3 3.9.12 and later
[ Fixes ]Fixes and patches
No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.