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.
Published: 2026-08-28
Score: 9 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 01 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
First Time appeared Synology
Synology synology Chat Server
Vendors & Products Synology
Synology synology Chat Server

Fri, 28 Aug 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 28 Aug 2026 12:15:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting in Synology Chat Server Allowing Remote Authenticated Arbitrary File Access and DoS

Fri, 28 Aug 2026 09:45:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting in Synology Chat Server Allowing Remote Authenticated Arbitrary File Access and DoS

Fri, 28 Aug 2026 07:30:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H'}


Subscriptions

Synology Synology Chat Server
cve-icon MITRE

Status: PUBLISHED

Assigner: synology

Published:

Updated: 2026-08-28T11:44:42.311Z

Reserved: 2026-04-14T01:01:14.607Z

Link: CVE-2026-40541

cve-icon Vulnrichment

Updated: 2026-08-28T11:44:38.594Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-28T08:16:40.713

Modified: 2026-09-01T20:54:51.287

Link: CVE-2026-40541

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-01T14:22:01Z

Weaknesses