Go/github.com/mattermost/mattermost/server/v8 CVE-2026-22545: unknown, EPSS 0.15%

Mattermost fails to validate user's authentication method when processing account auth type switch in github.com/mattermost/mattermost-server

Action: Upgrade github.com/mattermost/mattermost/server/v8 to 8.0.0-20260127144908-ced9a56e3988 or later.

go get github.com/mattermost/mattermost/server/v8@v8.0.0-20260127144908-ced9a56e3988

Affected

Fixed versions

Sources

• osv: GO-2026-4786#Go/github.com/mattermost/mattermost/server/v8
• https://github.com/advisories/GHSA-rv67-7w2g-7976
• https://nvd.nist.gov/vuln/detail/CVE-2026-22545
• https://github.com/mattermost/mattermost/commit/ced9a56e3988fe9fd4559d45f9971dbd562e2218
• https://mattermost.com/security-updates

CVE-2026-22545 · published 2026-03-23T18:16:14Z · modified 2026-03-23T18:45:21.496438Z · JSON