CVE-2026-9548 PUBLISHED

Assigner: synology
Reserved: 26.05.2026 Published: 28.08.2026 Updated: 28.08.2026

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.

Metrics

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
CVSS Score: 6.5

Product Status

Vendor Synology
Product Synology Chat Server
Versions Default: affected
  • affected from * to 2.4.5-22148 (excl.)

Credits

  • Warisse Valentin (Aytio) finder

References

Problem Types

  • Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') CWE