{"id":"CVE-2024-31859","aliases":["EUVD-2024-34453"],"status":"published","title":"Member promoted to channel admin via playbooks run linking to channel","description":"Mattermost versions 9.5.x \u003c= 9.5.3, 9.6.x \u003c= 9.6.1 and 8.1.x \u003c= 8.1.12 fail to perform proper authorization checks which allows a member running a playbook in an existing channel to be promoted to a channel admin","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00242,"percentile":0.155,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2024-05-26T13:31:42Z","modified":"2026-10-28T02:30:53Z","products":[{"vendor":"mattermost","product":"mattermost"},{"vendor":"mattermost","product":"mattermost_server"}],"references":[{"url":"https://mattermost.com/security-updates","tags":["x_transferred","Vendor Advisory","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/31xxx/CVE-2024-31859.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-31859","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2024-31859","title":"Member promoted to channel admin via playbooks run linking to channel","description":"Mattermost versions 9.5.x \u003c= 9.5.3, 9.6.x \u003c= 9.6.1 and 8.1.x \u003c= 8.1.12 fail to perform proper authorization checks which allows a member running a playbook in an existing channel to be promoted to a channel admin","status":"published","published":"2024-05-26T13:31:42.704Z","modified":"2024-08-02T01:59:49.9Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:34:14.308905Z"}],"euvd":[{"id":"EUVD-2024-34453","description":"Mattermost versions 9.5.x \u003c= 9.5.3, 9.6.x \u003c= 9.6.1 and 8.1.x \u003c= 8.1.12 fail to perform proper authorization checks which allows a member running a playbook in an existing channel to be promoted to a channel admin","status":"published","published":"2024-05-26T13:31:42Z","modified":"2024-08-02T01:59:49Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T03:50:24.06764Z"}],"nvd":[{"id":"CVE-2024-31859","description":"Mattermost versions 9.5.x \u003c= 9.5.3, 9.6.x \u003c= 9.6.1 and 8.1.x \u003c= 8.1.12 fail to perform proper authorization checks which allows a member running a playbook in an existing channel to be promoted to a channel admin","status":"published","published":"2024-05-26T14:15:08.907Z","modified":"2026-06-17T07:28:50.987Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"primary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:10:02.520903Z"}],"osv":[{"id":"CVE-2024-31859","title":"Member promoted to channel admin via playbooks run linking to channel","description":"Mattermost versions 9.5.x \u003c= 9.5.3, 9.6.x \u003c= 9.6.1 and 8.1.x \u003c= 8.1.12 fail to perform proper authorization checks which allows a member running a playbook in an existing channel to be promoted to a channel admin","status":"published","published":"2024-05-26T13:31:42.704Z","modified":"2026-10-28T02:30:53.021967331Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:44:40.06138Z"}]}}