VDB
CVE-2026-21386
CVE-2026-21386
PUBLISHED
CVSS 8.699999809265137 HIGH
Mattermost ist ein webbasierter Instant-Messaging-Dienst.
EPSS 0.18% · 8.2th percentile
Risk Scores
CVSS 4.0
8.699999809265137
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS Score
0.18%
8.2th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mattermost | Mattermost Mattermost Desktop <5.13.3.0 | |
| Mattermost | Mattermost Mattermost Server <11.3.1 | |
| Mattermost | Mattermost Mattermost Server <11.4.0 | |
| Mattermost | Mattermost Mattermost Server <11.2.3 | |
| Mattermost | Mattermost Mattermost Server <10.11.11 | |
| Mattermost | Mattermost Mattermost Desktop <5.13.4.0 | |
| Mattermost | Mattermost Mattermost Plugins <10.11.11 | |
| Mattermost | Mattermost Mattermost Plugins <2.3.1.0 |
Timeline
- Feb 15, 2026 CVE Published
- Mar 17, 2026 EPSS Score
- Mar 18, 2026 EPSS Score
- Mar 19, 2026 EPSS Score
- Mar 20, 2026 EPSS Score
- Mar 21, 2026 EPSS Score
- Mar 22, 2026 EPSS Score
- Mar 22, 2026 Security Advisory
- Mar 23, 2026 EPSS Score
- Mar 23, 2026 CVE Updated
- Mar 24, 2026 EPSS Score
- Mar 25, 2026 EPSS Score
References
- https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0422.json advisory
- https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0422 advisory
- https://mattermost.com/security-updates/#desktop advisory
- https://mattermost.com/security-updates/#plugins advisory
- https://mattermost.com/security-updates/#server advisory