{"schema_version":"1.7.3","id":"GHSA-jxc4-w54c-qv5r","published":"2022-05-24T17:21:07Z","modified":"2026-02-19T20:41:04.609917Z","aliases":["CVE-2017-18917","GO-2026-4463"],"summary":"Mattermost Server uses weak hashing for OAuth, email verification tokens and invitations","details":"An issue was discovered in Mattermost Server before 3.8.2 and 3.7.5. Weak hashing was used for e-mail invitations, OAuth, and e-mail verification tokens.","affected":[{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.7.5-0.20170421192444-247cd1e51a8c"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-jxc4-w54c-qv5r/GHSA-jxc4-w54c-qv5r.json"}},{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.8.0"},{"fixed":"3.8.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-jxc4-w54c-qv5r/GHSA-jxc4-w54c-qv5r.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18917"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/247cd1e51a8c943628dc650e87e794b06aad4c2b"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/b74e85653660525d351d090a1e1874ae933bcbc8"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"database_specific":{"cwe_ids":["CWE-328"],"github_reviewed":true,"github_reviewed_at":"2026-02-06T22:58:55Z","nvd_published_at":"2020-06-19T20:15:00Z","severity":"HIGH"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N"}]}