CVE-2026-9548

6.5 mediumEPSS 0.3%

Medium (6.5). EPSS 0.3% chance of exploitation in the next 30 days.

An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability in extract domain in Synology Chat Server before 2.4.5-22148 allows remote authenticated users, via a UI interaction, to read or write restricted files and conduct limited denial-of-service attacks in DSM.

Severity

CVSS 3.1

6.5 medium

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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-08-28
Modified: 2026-09-01
Record from: the NVD, synced 2026-10-19

References

https://www.synology.com/en-global/security/advisory/Synology_SA_26_10

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