{"action":"Upgrade github.com/mattermost/mattermost-server to 10.11.11+incompatible or later.","affected":[{"fixed":"10.11.11+incompatible","introduced":"10.11.0-rc1+incompatible"},{"fixed":"11.2.3+incompatible","introduced":"11.2.0-rc1+incompatible"},{"fixed":"11.3.1+incompatible","introduced":"11.3.0-rc1+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2026-22545"],"ecosystem":"Go","epss":0.00151,"exploited":false,"fixed_versions":["10.11.11+incompatible","11.2.3+incompatible","11.3.1+incompatible"],"ghsa_id":"GHSA-rv67-7w2g-7976","id":"tcs_01M5KGG27806RH36T6EYCK0RSF","modified_at":"2026-03-23T18:45:21.496438Z","published_at":"2026-03-23T18:16:14Z","references":["https://osv.dev/vulnerability/GO-2026-4786","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"],"severity":{"label":"low","score":3.5},"sources":[{"source":"osv","source_id":"GO-2026-4786","url":"https://osv.dev/vulnerability/GO-2026-4786"},{"source":"nvd","source_id":"CVE-2026-22545","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-22545"}],"summary":"Mattermost fails to validate user's authentication method when processing account auth type switch in github.com/mattermost/mattermost-server"}