CVE-2026-9491
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk33th percentile - higher than 33% of all known CVEs
Summary
A Server-Side Request Forgery (SSRF) vulnerability in the webhook function in Synology Chat Server before 2.4.5-22148 allows remote authenticated users to obtain non-sensitive information.
Risk Assessment
An authenticated user can access internal network resources, potentially leading to leakage of non-critical information.
Recommendation
Update Synology Chat Server to version 2.4.5-22148 or later.
Other vulnerabilities in Synology Chat Server
See all- CVE-2026-40541Critical
A Cross-site Scripting vulnerability in the extract domain function in Synology Chat Server before 2.4.5-22148 allows remote authenticated users, via UI interaction, to read or write arbitrary files and conduct denial-of-service attacks in DSM.
- CVE-2026-9548Medium
A Cross-site Scripting vulnerability in the extract domain function in Synology Chat Server before 2.4.5-22148 allows remote authenticated users, via UI interaction, to read or write restricted files and conduct limited denial-of-service attacks in DSM.
Original NVD description (English source)
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.