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Vulnerability · Published Oct 15, 2026 · Assigned by qnap

CVE-2026-39989SSRF in QNAP Download Station

Medium 5.3

In plain English

A medium-severity server-side request forgery in Download Station from QNAP Systems Inc.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 18% of all known vulnerabilities).

Severity (CVSS 4.0)5.3Medium
Exploit odds (30 days)0.3%top 81.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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

Affected products (as reported)

VendorProductVersions
QNAP Systems Inc. Download Station 5.10.x – before 5.10.1.3125.11.x – before 5.11.2.321

Weakness: CWE-918 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

References