tocsin

CVE-2026-26233

2 advisories.

Go/github.com/mattermost/mattermost-server CVE-2026-26233: medium 4.3

Mattermost doesn't rate limit login requests, allowing DoS

Action: Upgrade github.com/mattermost/mattermost-server to 10.11.12 or later.

go get github.com/mattermost/mattermost-server@v11.4.1
go get github.com/mattermost/mattermost-server@v11.3.2
go get github.com/mattermost/mattermost-server@v11.2.4
go get github.com/mattermost/mattermost-server@v10.11.12

Affected

introducedfixedlast affected
11.4.0-rc111.4.1-
11.3.0-rc111.3.2-
11.2.0-rc111.2.4-
10.11.0-rc110.11.12-

Fixed versions

11.4.111.3.211.2.410.11.12

Sources

CVE-2026-26233 · published · modified · JSON

Go/github.com/mattermost/mattermost-server CVE-2026-26233: unknown

Mattermost doesn't rate limit login requests, allowing DoS in github.com/mattermost/mattermost-server

Action: Upgrade github.com/mattermost/mattermost-server to 10.11.12+incompatible or later.

go get github.com/mattermost/mattermost-server@v10.11.12+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+incompatible10.11.12+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

10.11.12+incompatible11.2.4+incompatible11.3.2+incompatible11.4.1+incompatible

Sources

CVE-2026-26233 · published · modified · JSON