VDB
GO-2026-4520
GO-2026-4520
PUBLISHED
CVSS 9.300000190734863 CRITICAL
Mattermost fails to properly validate login method restrictions in github.com/mattermost/mattermost-server
Risk Scores
CVSS v4.0
9.300000190734863
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| github.com | mattermost/mattermost-server/v6 | 0, 0 |
| github.com | mattermost/mattermost-server/v5 | 0, 0 |
| github.com | mattermost/mattermost/server/v8 | 0, 0 |
| github.com | mattermost/mattermost-server | 11.2.0+incompatible, 10.11.0+incompatible, 0 |
Timeline
- Feb 23, 2026 CVE Published
- Feb 23, 2026 CVE Updated
- May 1, 2026 Security Advisory