Go/github.com/mattermost/mattermost-server CVE-2026-3108: high 8.8, EPSS 0.28%
Mattermost allows attackers to manipulate administrator terminals via crafted messages containing ANSI and OSC escape sequences in github.com/mattermost/mattermost-server
Action: Upgrade github.com/mattermost/mattermost-server to 10.11.11+incompatible or later.
go get github.com/mattermost/mattermost-server@v10.11.11+incompatiblego get github.com/mattermost/mattermost-server@v11.2.3+incompatiblego get github.com/mattermost/mattermost-server@v11.3.2+incompatiblego get github.com/mattermost/mattermost-server@v11.4.1+incompatibleAffected
| introduced | fixed | last affected |
|---|---|---|
| 10.11.0-rc1+incompatible | 10.11.11+incompatible | - |
| 11.2.0-rc1+incompatible | 11.2.3+incompatible | - |
| 11.3.0-rc1+incompatible | 11.3.2+incompatible | - |
| 11.4.0-rc1+incompatible | 11.4.1+incompatible | - |
Fixed versions
| 10.11.11+incompatible | 11.2.3+incompatible | 11.3.2+incompatible | 11.4.1+incompatible |
Sources
- osv: GO-2026-5067
- nvd: CVE-2026-3108
- https://github.com/advisories/GHSA-3439-vqgj-2gcf
- https://mattermost.com/security-updates
CVE-2026-3108 · published · modified · JSON