CVE-2026-13623 — MEDIUM (4.8)

Vulnerability Description

An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability in Theme API in Synology DiskStation Manager (DSM) before 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-86009-4 and 7.4-90075 allows remote authenticated users with administrator privileges to read or write limited files.

CVSS Score

4.8

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Related Weaknesses (CWE)

CWE-79

References

https://www.synology.com/en-global/security/advisory/Synology_SA_26_13

FAQ

What is CVE-2026-13623?

CVE-2026-13623 is a vulnerability with a CVSS score of 4.8 (MEDIUM). An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability in Theme API in Synology DiskStation Manager (DSM) before 7.2.1-69057-12, 7.2.2-72806-9, 7.3.2-860...

How severe is CVE-2026-13623?

CVE-2026-13623 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-13623?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.