{"action":"Upgrade github.com/mattermost/mattermost-server to 3.8.2+incompatible or later.","affected":[{"fixed":"3.8.2+incompatible","introduced":"3.8.0+incompatible"}],"component":"github.com/mattermost/mattermost-server","cve_ids":["CVE-2017-18917"],"ecosystem":"Go","epss":0.00717,"exploited":false,"fixed_versions":["3.8.2+incompatible"],"ghsa_id":"GHSA-jxc4-w54c-qv5r","id":"tcs_01M5KGDWHDQGTG1ZRH9GHSFC5N","modified_at":"2026-02-19T20:41:04.609917Z","published_at":"2026-02-17T18:09:06Z","references":["https://osv.dev/vulnerability/GO-2026-4463","https://github.com/advisories/GHSA-jxc4-w54c-qv5r","https://nvd.nist.gov/vuln/detail/CVE-2017-18917","https://github.com/mattermost/mattermost/commit/247cd1e51a8c943628dc650e87e794b06aad4c2b","https://github.com/mattermost/mattermost/commit/b74e85653660525d351d090a1e1874ae933bcbc8","https://mattermost.com/security-updates"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-4463","url":"https://osv.dev/vulnerability/GO-2026-4463"}],"summary":"Mattermost Server uses weak hashing for OAuth, email verification tokens and invitations in github.com/mattermost/mattermost-server"}