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TI-2026-74708 Aliases CVE-2026-39989

SSRF in QNAP Download Station

Priority LOW 24CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

Summary

A server-side request forgery (SSRF) flaw in QNAP Download Station from 5.10.x before 5.10.1.312 and from 5.11.x before 5.11.2.321 lets a remote attacker who has gained a user account read application data. The weakness is classified as CWE-918. Exploitation is not reported as known, and the CVSS 4.0 score is 5.3.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00263 18th percentileScored 2026-11-07
Fix Fixed Download Station (QNAP Systems Inc.): 5.10.1.312, 5.11.2.321

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
QNAPDownload Station5.10.x to before 5.10.1.312; 5.11.x to before 5.11.2.3215.10.1.312, 5.11.2.321Patch availableCNA
  • Download Station VendorQNAP Affected 5.10.x to before 5.10.1.312; 5.11.x to before 5.11.2.321 Fixed in 5.10.1.312, 5.11.2.321 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:qnap:download_station:*:*:*:*:*:*:*:*——QNAP
  • cpe:2.3:a:qnap:download_station:*:*:*:*:*:*:*:* Versions — — ·QNAP

Remediation

Update Download Station to 5.10.1.312 or later for the 5.10.x branch, or to 5.11.2.321 or later for the 5.11.x branch.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA Download Station (QNAP Systems Inc.) Fixed in 5.10.1.312, 5.11.2.321

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    QNAP Systems Download Station 5.10.1.312, 5.11.2.321

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-74706 Incorrect permissions on script in QNAP Download StationPriority LOW 37
    Show all 2 records →

Timeline

  1. 2026-10-16 Threatist record created from CVE-2026-39989

References

Other 1

  • TI-2022-10581 DeadBolt Ransomware KEVCVSS 3.1CRITICAL 10.0
  • TI-2021-09791 Improper Authorization Vulnerability in HBS 3 (Hybrid Backup Sync) KEVCVSS 3.1CRITICAL 10.0
  • TI-2020-02221 Command Injection Vulnerability in QTS and QuTS hero KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05103 Path traversal in QNAP NAS devices running Photo Station KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05102 Path traversal in QNAP NAS devices running Photo Station KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05101 Improper input validation in QNAP NAS devices KEVCVSS 3.1CRITICAL 9.8
See all 681 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences