VDB
CVE-2026-20719
CVE-2026-20719
PUBLISHED
CVSS 4.300000190734863 MEDIUM
De multiples vulnérabilités ont été découvertes dans Mattermost Server. Certaines d'entre elles permettent à un attaquant de provoquer un déni de service à distance, une injection de requêtes illégitimes par rebond (CSRF) et un contournement de la politique de sécurité.
EPSS 0.07% · 22.0th percentile
Risk Scores
CVSS 3.1
4.300000190734863
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
EPSS Score
0.07%
22.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| mattermost | mattermost_server | 10.11.0, 11.2.0, 11.3.0 |
| Mattermost | Mattermost | 11.4.0, 11.3.0, 10.11.0 |
| Mattermost | Mattermost Server | |
| github.com | mattermost/mattermost/server/v8 | 11.4.0-rc1, 11.3.0-rc1, 11.2.0-rc1 |
Exploit Intelligence
- MMSA-2025-00566 (circl)
- CIRCL seen: CVE-2026-26233 (circl-sighting)
- CIRCL seen: CVE-2026-26233 (circl-sighting)
Timeline
- Feb 24, 2026 CVE Published
- Mar 25, 2026 Coalition ESS Score
- Mar 25, 2026 PoC Published
- Mar 26, 2026 CVE Updated
- Mar 26, 2026 PoC Published
- Mar 31, 2026 Security Advisory
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
- May 22, 2026 EPSS Score
- May 23, 2026 EPSS Score
References
- https://mattermost.com/security-updates/ advisory
- MMSA-2025-00566 vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-20719 advisory
- https://github.com/mattermost/mattermost package