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 in github.com/mattermost/mattermost-server
Action: Upgrade github.com/mattermost/mattermost-server to 10.11.10+incompatible or later.
go get github.com/mattermost/mattermost-server@v10.11.10+incompatibleAffected
| introduced | fixed | last affected |
|---|---|---|
| 10.11.0+incompatible | 10.11.10+incompatible | - |
Fixed versions
| 10.11.10+incompatible |
Sources
- osv: GO-2026-4495
- nvd: CVE-2026-20796
- https://github.com/advisories/GHSA-2xf7-hmf6-p64j
- https://mattermost.com/security-updates
CVE-2026-20796 · published · modified · JSON