What is CVE-2026-40537?

CVE-2026-40537 is a medium-severity vulnerability in Synology Diskstation Manager (Dsm), classified under Server-Side Request Forgery (SSRF). CVSS score: 4.3/10. Published 2026-09-18.

How severe is CVE-2026-40537?

Medium severity. CVSS v3 base score is 4.3 out of 10.

SSRF in Synology Diskstation Manager (Dsm)

CVE-2026-40537

A server-side request forgery (SSRF) vulnerability in PersonMail API in Synology DiskStation Manager (DSM) before 7.2.1-69057-10, 7.2.2-72806-7 and 7.3.2-86009-2 allows remote authenticated users to obtain non-sensitive information.

Vulnerability class: SSRF (Server-Side Request Forgery)

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Synology Diskstation Manager (Dsm)

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security@synology.com (vendor-advisory)

Frequently asked questions

What is CVE-2026-40537?: CVE-2026-40537 is a medium-severity vulnerability in Synology Diskstation Manager (Dsm), classified under Server-Side Request Forgery (SSRF). CVSS score: 4.3/10. Published 2026-09-18.
How severe is CVE-2026-40537?: Medium severity. CVSS v3 base score is 4.3 out of 10.