{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"github.com/mattermost/mattermost-server/v6","cve_ids":["CVE-2025-12559"],"ecosystem":"Go","epss":0.00216,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-4g87-9x45-cx2h","id":"tcs_01M5KGC03MJZ82NEH2KX83WJQB","modified_at":"2026-03-03T04:57:43.053558Z","published_at":"2025-12-15T20:33:49Z","references":["https://osv.dev/vulnerability/GO-2025-4169","https://github.com/advisories/GHSA-4g87-9x45-cx2h","https://nvd.nist.gov/vuln/detail/CVE-2025-12559","https://github.com/mattermost/mattermost/commit/5d8719042c1807da59ac8a821624eb01152d8495","https://github.com/mattermost/mattermost/commit/649aee8fa9184ca59bd66022a33b8f8918e413aa","https://github.com/mattermost/mattermost/commit/7ccb62db7958abd6a4b21a06c5a4f5367a8f8b1f","https://github.com/mattermost/mattermost/commit/9f54e5cdc3aef412945ff0e6a58338f7b549bdda","https://github.com/mattermost/mattermost/commit/abbf01b9db45d1850eaf3701ea8362b910193ffd","https://github.com/mattermost/mattermost/pull/34110","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GO-2025-4169#Go/github.com/mattermost/mattermost-server/v6","url":"https://osv.dev/vulnerability/GO-2025-4169"},{"source":"nvd","source_id":"CVE-2025-12559","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-12559"}],"summary":"Mattermost fails to sanitize team email addresses in github.com/mattermost/mattermost-server"}