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Go/github.com/mattermost/mattermost-server CVE-2026-6347: high 7.6, EPSS 0.27%

Mattermost doesn't sanitize sensitive configuration fields in the Mattermost Calls plugin

Action: Upgrade github.com/mattermost/mattermost-server to 10.11.14 or later.

go get github.com/mattermost/mattermost-server@v11.5.2
go get github.com/mattermost/mattermost-server@v10.11.14
go get github.com/mattermost/mattermost-server@v11.4.4

Affected

introducedfixedlast affected
11.5.011.5.2-
10.11.010.11.14-
11.4.011.4.4-

Fixed versions

11.5.210.11.1411.4.4

Sources

CVE-2026-6347 · published · modified · JSON