CVE-2026-40534: XSS
Published Sep 18, 2026
·Updated
An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Video 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 read or write limited files when the player is launched.
Affected Software
1 affected component
Synology DiskStation Manager (DSM)<7.2.1-69057-10, <7.2.2-72806-7, <7.3.2-86009-2
Event History
Sep 18, 2026
CVE Published
via MITRE·08:27 AM
Data Sourced
via MITRE·08:27 AM
DescriptionSeverityWeakness
Frequently Asked Questions
1
Who can exploit this issue?
A remote attacker must be authenticated to DSM. Exploitation also requires the player to be launched.
2
What access could exploitation provide?
The issue may allow an authenticated remote user to read or write limited files. The affected component is the Video API during web page generation.
3
Which DSM releases contain fixes?
Upgrade to DSM 7.2.1-69057-10, 7.2.2-72806-7, 7.3.2-86009-2, or a later release in the applicable branch.