{"action":"Upgrade github.com/mattermost/mattermost-server to 5.3.2-0.20260127144908-ced9a56e3988 or later.","affected":[{"fixed":"5.3.2-0.20260127144908-ced9a56e3988","introduced":"0"},{"fixed":"10.11.11","introduced":"10.11.0-rc1"},{"fixed":"11.2.3","introduced":"11.2.0-rc1"},{"fixed":"11.3.1","introduced":"11.3.0-rc1"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2026-22545"],"ecosystem":"Go","epss":0.00151,"exploited":false,"fixed_versions":["5.3.2-0.20260127144908-ced9a56e3988","10.11.11","11.2.3","11.3.1"],"ghsa_id":"GHSA-rv67-7w2g-7976","id":"tcs_01M5KFN8PF4WNAKY637NCFZ249","modified_at":"2026-03-23T18:56:23.696710Z","published_at":"2026-03-16T15:30:47Z","references":["https://osv.dev/vulnerability/GHSA-rv67-7w2g-7976","https://nvd.nist.gov/vuln/detail/CVE-2026-22545","https://github.com/mattermost/mattermost/commit/ced9a56e3988fe9fd4559d45f9971dbd562e2218","https://github.com/mattermost/mattermost","https://mattermost.com/security-updates"],"severity":{"label":"low","score":3.1},"sources":[{"source":"osv","source_id":"GHSA-rv67-7w2g-7976#Go/github.com/mattermost/mattermost-server","url":"https://osv.dev/vulnerability/GHSA-rv67-7w2g-7976"}],"summary":"Mattermost fails to validate user's authentication method when processing account auth type switch"}