tocsin

Go/github.com/mattermost/mattermost-server CVE-2026-20719: high 7.5, EPSS 0.36%

Mattermost: Authenticated DoS through failure to prevent rendering of external SVGs on link embeds in github.com/mattermost/mattermost-server

Action: Upgrade github.com/mattermost/mattermost-server to 10.11.2+incompatible or later.

go get github.com/mattermost/mattermost-server@v10.11.2+incompatible
go get github.com/mattermost/mattermost-server@v11.2.4+incompatible
go get github.com/mattermost/mattermost-server@v11.3.2+incompatible
go get github.com/mattermost/mattermost-server@v11.4.1+incompatible

Affected

introducedfixedlast affected
10.11.0-rc1+incompatible10.11.2+incompatible-
11.2.0-rc1+incompatible11.2.4+incompatible-
11.3.0-rc1+incompatible11.3.2+incompatible-
11.4.0-rc1+incompatible11.4.1+incompatible-

Fixed versions

10.11.2+incompatible11.2.4+incompatible11.3.2+incompatible11.4.1+incompatible

Sources

CVE-2026-20719 · published · modified · JSON