{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2025-13870"],"ecosystem":"Go","epss":0.00223,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-58w6-w55x-6wq8","id":"tcs_01M5KGC37SPW00KABTWPX27EEP","modified_at":"2026-03-03T04:57:45.103171Z","published_at":"2025-12-08T21:31:36Z","references":["https://osv.dev/vulnerability/GO-2025-4178","https://github.com/advisories/GHSA-58w6-w55x-6wq8","https://github.com/mattermost/mattermost/commit/ba86dfc5876b354b9d3c20ff45c08ca6f8426149","https://mattermost.com/security-updates"],"severity":{"label":"medium","score":4.3},"sources":[{"source":"osv","source_id":"GO-2025-4178#Go/github.com/mattermost/mattermost-server","url":"https://osv.dev/vulnerability/GO-2025-4178"},{"source":"nvd","source_id":"CVE-2025-13870","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-13870"}],"summary":"Mattermost fails to validate user permissions in Boards in github.com/mattermost/mattermost"}