CVE-2026-39989 SSRF in QNAP Download Station
A remote attacker with a user account can exploit an SSRF vulnerability in QNAP Download Station to read application data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-39989?
CVE-2026-39989 is a medium-severity server-side request forgery vulnerability in QNAP Systems Inc. Download Station, published on 15 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A server-side request forgery (SSRF) vulnerability has been reported to affect Download Station. If a remote attacker gains a user account, they can then exploit the vulnerability to read application data.
We have already fixed the vulnerability in the following version: Download Station 5.10.1.312 and later Download Station 5.11.2.321 and later
Weakness: CWE-918
Which versions are affected by CVE-2026-39989?
How do I fix CVE-2026-39989?
No fix has been published for CVE-2026-39989 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-39989 being exploited?
There is no known exploitation of CVE-2026-39989 in the wild and no public exploit code.
Sources
Also known as GHSA-gxh4-v8pp-4j5f.