Go/github.com/mattermost/mattermost-server CVE-2026-20796: low 3.1, EPSS 0.22%
Mattermost doesn't properly validate channel membership at the time of data retrieval
Action: Upgrade github.com/mattermost/mattermost-server to 10.11.10 or later.
go get github.com/mattermost/mattermost-server@v10.11.10Affected
| introduced | fixed | last affected |
|---|---|---|
| 10.11.0 | 10.11.10 | - |
Fixed versions
| 10.11.10 |
Sources
- osv: GHSA-2xf7-hmf6-p64j
- https://nvd.nist.gov/vuln/detail/CVE-2026-20796
- https://github.com/mattermost/mattermost
- https://mattermost.com/security-updates
CVE-2026-20796 · published · modified · JSON