Go/github.com/mattermost/mattermost-server CVE-2026-6346: high 8.7, EPSS 0.30%
Mattermost doesn't sanitize sensitive configuration fields before including them in support packet generation
Action: Upgrade github.com/mattermost/mattermost-server to 5.3.2-0.20260326202606-fac92f4a71f3 or later.
go get github.com/mattermost/mattermost-server@v5.3.2-0.20260326202606-fac92f4a71f3Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 5.3.2-0.20260326202606-fac92f4a71f3 | - |
Fixed versions
| 5.3.2-0.20260326202606-fac92f4a71f3 |
Sources
- osv: GHSA-9p64-jpc7-m2rp#Go/github.com/mattermost/mattermost-server
- https://nvd.nist.gov/vuln/detail/CVE-2026-6346
- https://github.com/mattermost/mattermost/commit/fac92f4a71f356009e27983a980f729f599e8ba5
- https://github.com/mattermost/mattermost
- https://mattermost.com/security-updates
CVE-2026-6346 · published · modified · JSON