VDB
CVE-2026-26233
CVE-2026-26233
PUBLISHED
CVSS 4.300000190734863 MEDIUM
Mattermost doesn't rate limit login requests, allowing DoS
EPSS 0.12% · 31.0th 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
0.12%
31.0th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| mattermost | mattermost_server | 11.3.0, 11.4.0, 11.2.0 |
| github.com | mattermost/mattermost-server | 10.11.0-rc1, 11.4.0-rc1, 11.3.0-rc1 |
| Mattermost | Mattermost | 11.4.0, 11.3.0, 11.2.0 |
Timeline
- Feb 24, 2026 CVE Published
- Mar 25, 2026 Coalition ESS Score
- Mar 25, 2026 PoC Published
- Mar 25, 2026 PoC Published
- Mar 26, 2026 PoC Published
- Mar 26, 2026 Security Advisory
- Mar 26, 2026 CVE Updated
- Mar 29, 2026 Security Advisory
- May 18, 2026 EPSS Score
- May 19, 2026 EPSS Score
- May 20, 2026 EPSS Score
- May 21, 2026 EPSS Score
References
- https://mattermost.com/security-updates/ advisory
- MMSA-2025-00566 vendor-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-26233 advisory
- https://github.com/mattermost/mattermost package