CVE-2026-40534CWE-79cross-site-scripting

CVE-2026-40534

Medium · published September 18, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
18.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00269 · 18.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-18T13:16Z
References (1)
https://www.synology.com/en-global/security/advisory/Synology_SA_26_06 · [email protected]
EPSS history
Timeline
  • 19 SEP 03:52Z
    EPSS moved — → 0%
    epss
  • 18 SEP 08:27Z
    An improper neutralization of input during web page generation ('cross-site scripting') vulnerability in Video API in Synology DiskStation Manager (DSM) before…
    cvelistv5