Go/github.com/mattermost/mattermost-server CVE-2026-22545: low 3.1, EPSS 0.15%
Mattermost fails to validate user's authentication method when processing account auth type switch
Action: Upgrade github.com/mattermost/mattermost-server to 5.3.2-0.20260127144908-ced9a56e3988 or later.
go get github.com/mattermost/mattermost-server@v5.3.2-0.20260127144908-ced9a56e3988go get github.com/mattermost/mattermost-server@v10.11.11go get github.com/mattermost/mattermost-server@v11.2.3go get github.com/mattermost/mattermost-server@v11.3.1Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 5.3.2-0.20260127144908-ced9a56e3988 | - |
| 10.11.0-rc1 | 10.11.11 | - |
| 11.2.0-rc1 | 11.2.3 | - |
| 11.3.0-rc1 | 11.3.1 | - |
Fixed versions
| 5.3.2-0.20260127144908-ced9a56e3988 | 10.11.11 | 11.2.3 | 11.3.1 |
Sources
- osv: GHSA-rv67-7w2g-7976#Go/github.com/mattermost/mattermost-server
- https://nvd.nist.gov/vuln/detail/CVE-2026-22545
- https://github.com/mattermost/mattermost/commit/ced9a56e3988fe9fd4559d45f9971dbd562e2218
- https://github.com/mattermost/mattermost
- https://mattermost.com/security-updates
CVE-2026-22545 · published · modified · JSON