{"action":"Upgrade github.com/mattermost/mattermost-server to 11.1.0+incompatible or later.","affected":[{"fixed":"11.1.0+incompatible","introduced":"0"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2025-55070"],"ecosystem":"Go","epss":0.00315,"exploited":false,"fixed_versions":["11.1.0+incompatible"],"ghsa_id":"GHSA-xpg8-8xpv-948p","id":"tcs_01M5KGBP9TFX3SZQ1XTSCGQRDB","modified_at":"2026-03-03T04:57:38.364389Z","published_at":"2025-11-17T19:11:25Z","references":["https://osv.dev/vulnerability/GO-2025-4128","https://github.com/advisories/GHSA-xpg8-8xpv-948p","https://nvd.nist.gov/vuln/detail/CVE-2025-55070","https://github.com/mattermost/mattermost/commit/7d8b7b5e4a6076b2f7c87606883c417f9a610df5","https://mattermost.com/security-updates"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GO-2025-4128","url":"https://osv.dev/vulnerability/GO-2025-4128"},{"source":"nvd","source_id":"CVE-2025-55070","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55070"}],"summary":"Mattermost does not enforce MFA on WebSocket connections in github.com/mattermost/mattermost-server"}