{"schema_version":"1.7.3","id":"GHSA-hxxj-8phw-74vw","published":"2022-05-24T17:21:07Z","modified":"2026-02-19T20:41:20.234524Z","aliases":["CVE-2017-18915","GO-2026-4462"],"summary":"Mattermost Server server restarts may provide attackers with API access","details":"An issue was discovered in Mattermost Server before 3.8.2, 3.7.5, and 3.6.7. After a restart of a server, an attacker might suddenly gain API Endpoint access.","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":"3.6.7-0.20170420152529-0968e4079e0a"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-hxxj-8phw-74vw/GHSA-hxxj-8phw-74vw.json"}},{"package":{"name":"github.com/mattermost/mattermost-server","ecosystem":"Go","purl":"pkg:golang/github.com/mattermost/mattermost-server"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.7.0"},{"fixed":"3.7.5"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-hxxj-8phw-74vw/GHSA-hxxj-8phw-74vw.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-hxxj-8phw-74vw/GHSA-hxxj-8phw-74vw.json"}}],"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18915"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/0968e4079e0aa670254f3fe3a7248d126e3cf877"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/c7bdce8a6641ed8d361a43b6004a351535c78423"},{"type":"WEB","url":"https://github.com/mattermost/mattermost/commit/fb325cc339eb8d8efb60dbadc48fd38897201c6f"},{"type":"PACKAGE","url":"https://github.com/mattermost/mattermost"},{"type":"WEB","url":"https://mattermost.com/security-updates"}],"database_specific":{"cwe_ids":["CWE-20","CWE-807"],"github_reviewed":true,"github_reviewed_at":"2026-02-06T22:58:39Z","nvd_published_at":"2020-06-19T20:15:00Z","severity":"CRITICAL"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}