{"id":"CVE-2026-8823","revision":"5c69549e49cd4f2d9fd532d43bbe1d1a","records":[{"revision":"5c69549e49cd4f2d9fd532d43bbe1d1a","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-8823","aliases":[],"title":"User Manager can demote bot accounts to guest without bot-management permission","description":"Mattermost versions 11.7.x <= 11.7.0, 10.11.x <= 10.11.17 fail to validate bot targets when demoting users to guests which allows a lower-privileged administrator to degrade arbitrary bot accounts via the standard demote-user API.. Mattermost Advisory ID: MMSA-2026-00669","state":0,"publishedAt":"2026-06-22T13:41:28.404+00:00","modifiedAt":"2026-06-22T16:12:31.35+00:00","affected":[{"ecosystem":"Vendor product","name":"Mattermost","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"product\": \"Mattermost\",\n                    \"vendor\": \"Mattermost\",\n                    \"versions\": [\n                        {\n                            \"lessThanOrEqual\": \"11.7.0\",\n                            \"status\": \"affected\",\n                            \"version\": \"11.7.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"lessThanOrEqual\": \"10.11.17\",\n                            \"status\": \"affected\",\n                            \"version\": \"10.11.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"version\": \"11.8.0\",\n                            \"status\": \"unaffected\"\n                        },\n                        {\n                            \"version\": \"11.7.1\",\n                            \"status\": \"unaffected\"\n                        },\n                        {\n                            \"version\": \"10.11.18\",\n                            \"status\": \"unaffected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L","score":3.8,"severity":"LOW"}],"references":["https://mattermost.com/security-updates"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-8823","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-8823","identifiers":["CVE-2026-8823"]},"retained":false,"historicalAffected":[]}],"coverage":[]}