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Go/github.com/mattermost/mattermost-server CVE-2026-6062: unknown, EPSS 0.24%

Mattermost doesn't validate channel ownership of an existing subscription before applying edits in github.com/mattermost/mattermost-server

Action: Upgrade github.com/mattermost/mattermost-server to 10.11.18+incompatible or later.

go get github.com/mattermost/mattermost-server@v10.11.18+incompatible
go get github.com/mattermost/mattermost-server@v11.5.6+incompatible
go get github.com/mattermost/mattermost-server@v11.6.3+incompatible
go get github.com/mattermost/mattermost-server@v11.7.1+incompatible

Affected

introducedfixedlast affected
10.11.0+incompatible10.11.18+incompatible-
11.5.0+incompatible11.5.6+incompatible-
11.6.0+incompatible11.6.3+incompatible-
11.7.0+incompatible11.7.1+incompatible-

Fixed versions

10.11.18+incompatible11.5.6+incompatible11.6.3+incompatible11.7.1+incompatible

Sources

CVE-2026-6062 · published · modified · JSON