{"id":"CVE-2023-5193","aliases":["GHSA-h8wh-f7gw-fwpr"],"url":"https://o3.security/vulnerability/CVE-2023-5193","summary":"System Role with manage posts permission can read posts of Direct Messages","details":"Mattermost fails to properly check permissions when retrieving a post allowing for a System Role with the permission to manage channels to read the posts of a DM conversation.\n\n","published":"2023-09-29T09:23:47.082Z","modified":"2026-07-15T01:49:08.079805444Z","cvss":{"score":4.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","fixedVersion":"8.1.1"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","fixedVersion":"8.0.2"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","fixedVersion":"7.8.10"}],"fix":null,"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/5xxx/CVE-2023-5193.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-5193"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:08.079805444Z"}}