EUVD Vulnerability Catalog

EUVD-2026-67461

Severity: CRITICAL Base Score: 9 CVSS Version: 3.1

Vulnerability Description

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 arbitrary files and conduct denial-of-service attacks in DSM.

CVSS Vector Analysis

Below is the complete, human-readable breakdown of the CVSS metric string: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

▪ Attack Vector (AV): Network

▪ Attack Complexity (AC): Low

▪ Privileges Required (PR): Low

▪ User Interaction (UI): Required

▪ Scope (S): Changed

▪ Confidentiality Impact (C): High

▪ Integrity Impact (I): High

▪ Availability Impact (A): High

Affected Vendors & Systems

Vendor Synology

References & Advisory Links

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

Metadata Profile

Database Authority

European Union Agency for Cybersecurity (ENISA) EUVD

Assigner

synology

EPSS Probability

Known Aliases

GHSA-gjqh-xg93-f8cw CVE-2026-40541

Published On

2026-08-28

Last Updated

2026-08-28