Mattermost security vulnerabilities
🗓️ 22 May 2026 00:00:00Reported by China National Vulnerability Database of Information SecurityType 
cnnvd🔗 www.cnnvd.org.cn👁 30 Views
| Reporter | Title | Published | Views | Family All 18 |
|---|---|---|---|---|
 | CVE-2026-4646 | 22 May 202610:25 | – | attackerkb |
 | Mattermost API Request Handler DoS | 1 Jun 202600:00 | – | bdu_fstec |
 | CVE-2026-4646 | 22 May 202613:05 | – | circl |
 | CVE-2026-4646 | 22 May 202610:25 | – | cve |
 | CVE-2026-4646 Insufficient input validation in GitHub plugin API causes denial of service | 22 May 202610:25 | – | cvelist |
 | EUVD-2026-31430 | 22 May 202610:25 | – | euvd |
 | Mattermost doesn't validate user-supplied input in API request handlers | 26 May 202613:30 | – | github |
 | CVE-2026-4646 | 22 May 202610:25 | – | mend |
 | CVE-2026-4646 | 22 May 202611:16 | – | nvd |
 | GHSA-RMVV-8V8W-RF7X Mattermost doesn't validate user-supplied input in API request handlers | 26 May 202613:30 | – | osv_ghsa |
10
| Source | Link |
|---|---|
| mattermost | www.mattermost.com/security-updates |
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02 Jun 2026 00:00Current
6.4Medium risk
Vulners AI Score6.4
CVSS 3.14.3
EPSS0.0025
SSVC