Go/github.com/mattermost/mattermost/server/v8 CVE-2026-4286: low 3.1, EPSS 0.14%
Mattermost doesn't check if {{team_id}} was being changed when updating playbooks
Action: Upgrade github.com/mattermost/mattermost/server/v8 to 10.11.14 or later.
go get github.com/mattermost/mattermost/server/v8@v11.5.2go get github.com/mattermost/mattermost/server/v8@v10.11.14Affected
| introduced | fixed | last affected |
|---|---|---|
| 11.5.0 | 11.5.2 | - |
| 10.11.0 | 10.11.14 | - |
Fixed versions
| 11.5.2 | 10.11.14 |
Sources
- osv: GHSA-gvg4-jhmr-6j23
- https://nvd.nist.gov/vuln/detail/CVE-2026-4286
- https://github.com/mattermost/mattermost-plugin-playbooks/commit/e1d6ec2c94e695fb74e0c0c11c0d45e028bb96f3
- https://github.com/mattermost/mattermost
- https://mattermost.com/security-updates
CVE-2026-4286 · published · modified · JSON