Go/github.com/mattermost/mattermost-server/v5 CVE-2026-21386: unknown, EPSS 0.19%
Mattermost fails to use consistent error responses when handling the /mute command in github.com/mattermost/mattermost-server
Action: No fix published. Pin and monitor.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | - | - |
Fixed versions
No fixed version in the source.
Sources
- osv: GO-2026-4744#Go/github.com/mattermost/mattermost-server/v5
- https://github.com/advisories/GHSA-5mr9-crcg-8wh2
- https://nvd.nist.gov/vuln/detail/CVE-2026-21386
- https://github.com/mattermost/mattermost/commit/5bb5261c72faa476558a694c23581d24b734da41
- https://mattermost.com/security-updates
CVE-2026-21386 · published · modified · JSON