{"id":"CVE-2024-39837","aliases":["BIT-mattermost-2024-39837","GHSA-vvpg-55p7-5h8w","GO-2024-3032"],"url":"https://o3.security/vulnerability/CVE-2024-39837","summary":"Malicious remote can create arbitrary channels","details":"Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6 fail to properly restrict channel creation which allows a malicious remote to create arbitrary channels, when shared channels were enabled.","published":"2024-08-01T14:05:06.182Z","modified":"2026-07-15T02:12:01.519928374Z","cvss":{"score":3.8,"severity":"LOW","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","fixedVersion":"9.5.7"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","fixedVersion":"9.9.1"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost/server/v8","fixedVersion":"8.0.0-20240626164322-c758cecaf30c"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","fixedVersion":"9.9.1"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v5","fixedVersion":"5.3.2-0.20240626164322-c758cecaf30c"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server/v6","fixedVersion":"6.0.0-20240626164322-c758cecaf30c"},{"ecosystem":"Go","name":"github.com/mattermost/mattermost-server","fixedVersion":"9.5.7"}],"fix":null,"references":[{"type":"WEB","url":"https://mattermost.com/security-updates"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/39xxx/CVE-2024-39837.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-39837"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T02:12:01.519928374Z"}}