Technology · Synology
Synology Chat Server vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 3 vulnerabilities in Synology Chat Server: 0 in the last 7 days and 3 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-9548, was published on 28 August 2026. Nothing was published in the last eight weeks.
- Last 7 days
- 0
- Last 90 days
- 3
- Critical, all time
- 1
- Exploited in the wild
- 0
About Synology Chat Server
Chat Server service by Synology for instant messaging and team communication.
Latest Synology Chat Server vulnerabilities
- CVE-2026-9548: Synology Chat Server XSS in extract domainmediumCVSS 6.5EPSS 0.3%
- CVE-2026-9491: Synology Chat Server SSRF in webhookmediumCVSS 4.3EPSS 0.4%
- CVE-2026-40541: Synology Chat Server cross-site scripting in domain extractioncriticalCVSS 9EPSS 0.5%
Most severe Synology Chat Server vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-40541: Synology Chat Server cross-site scripting in domain extractioncriticalCVSS 9EPSS 0.5%
- CVE-2026-9548: Synology Chat Server XSS in extract domainmediumCVSS 6.5EPSS 0.3%
- CVE-2026-9491: Synology Chat Server SSRF in webhookmediumCVSS 4.3EPSS 0.4%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 17 Aug 2026 | 0 | 0 | |
| 24 Aug 2026 | 3 | 1 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many Synology Chat Server vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/chat-server)<a href="https://junglewise.ai/threats/technologies/chat-server"><img src="https://junglewise.ai/threats/technologies/chat-server/badge.svg" alt="Synology Chat Server vulnerabilities" /></a>How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/chat-server.json, and this page as text at https://junglewise.ai/threats/technologies/chat-server.md, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "Synology Chat Server vulnerabilities", https://junglewise.ai/threats/technologies/chat-server, 13 November 2026.