GHSA-rv67-7w2g-7976
Mattermost fails to validate user's authentication method when processing account auth type switch
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20260127144908-ced9a56e3988 | 8.0.0-20260127144908-ced9a56e3988 |
| Go | github.com/mattermost/mattermost-server | < 5.3.2-0.20260127144908-ced9a56e3988 | 5.3.2-0.20260127144908-ced9a56e3988 |
| Go | github.com/mattermost/mattermost-server | >= 10.11.0-rc1, < 10.11.11 | 10.11.11 |
| Go | github.com/mattermost/mattermost-server | >= 11.2.0-rc1, < 11.2.3 | 11.2.3 |
| Go | github.com/mattermost/mattermost-server | >= 11.3.0-rc1, < 11.3.1 | 11.3.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
Mattermost versions 10.11.x <= 10.11.10 fail to validate user's authentication method when processing account auth type switch which allows an authenticated attacker to change account password without confirmation via falsely claiming a different auth provider.. Mattermost Advisory ID: MMSA-2026-00583
References
External links from the advisory. They lead to third-party sites.