Server-Side Request Forgery Vulnerability in Synology DiskStation Manager
CVE-2026-40537

4.3MEDIUM

Key Information:

Vendor

Synology
Status
Diskstation Manager (dsm)
Vendor
CVE Published:
18 September 2026

What is CVE-2026-40537?

A server-side request forgery (SSRF) vulnerability exists in the PersonMail API of Synology DiskStation Manager, impacting versions prior to 7.2.1-69057-10, 7.2.2-72806-7, and 7.3.2-86009-2. This flaw allows remote authenticated users to potentially retrieve non-sensitive information from the server, posing a risk to data integrity and confidentiality. It is essential for users of affected versions to update their systems promptly to mitigate this vulnerability.

Affected Version(s)

DiskStation Manager (DSM) 7.3

DiskStation Manager (DSM) 7.3 < 7.3.2-86009-2

DiskStation Manager (DSM) 7.2.2 < 7.2.2-72806-7

References

https://www.synology.com/en-global/security/advisory/Syno...
vendor-advisory

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Warisse Valentin (Aytio)
.