CVE-2026-9491

Published Aug 28, 2026 CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Description
A server-ide request forgery (SSRF) vulnerability in webhook in Synology Chat Server before 2.4.5-22148 allows remote authenticated users to obtain non-sensitive information.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Synology
Synology synology Chat Server
Vendors & Products Synology
Synology synology Chat Server
Type Values Removed Values Added
Title Synology Chat Server SSRF via Webhook Allows Authenticated Users to Retrieve Non‑Sensitive Information
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
Title Synology Chat Server SSRF via Webhook Allows Authenticated Users to Retrieve Non‑Sensitive Information
Type Values Removed Values Added
Description A server-ide request forgery (SSRF) vulnerability in webhook in Synology Chat Server before 2.4.5-22148 allows remote authenticated users to obtain non-sensitive information.
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
synology
Published
Updated
Aug 28, 2026, 11:03 AM
Reserved
May 25, 2026, 2:03 AM
Status
Awaiting Analysis
Published
Aug 28, 2026, 8:16 AM
Modified
Sep 1, 2026, 8:54 PM