{"id":"CVE-2026-111643","revision":"438b76d1bff548d0ba728294d21a59a3","records":[{"revision":"438b76d1bff548d0ba728294d21a59a3","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-111643","aliases":[],"title":"Misaka Danmu Server through 2.8.9 Authentication Bypass via Config-History Rollback","description":"Misaka Danmu Server through 2.8.9 contains an authentication bypass vulnerability that allows unauthenticated attackers to write arbitrary configuration keys via the unprotected POST /api/ui/config-history/rollback endpoint. Attackers can set the ipWhitelist key to their own /32 address, or alter trustedProxies and webhookApiKey, to access every protected endpoint as the administrator.","state":0,"publishedAt":"2026-10-16T17:39:13.043+00:00","modifiedAt":"2026-10-16T17:39:13.043+00:00","affected":[{"ecosystem":"Vendor product","name":"misaka_danmu_server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"l429609201\",\n                    \"product\": \"misaka_danmu_server\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"2.8.9\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/l429609201/misaka_danmu_server\",\n                    \"repo\": \"https://github.com/l429609201/misaka_danmu_server\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","score":9.3,"severity":"CRITICAL"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://hackmd.io/@hieuPenguinnn/misaka-danmu-server-ui-api-missing-authentication","https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/api/ui/config_history.py#L51-L66","https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/security.py#L136-L182","https://www.vulncheck.com/advisories/misaka-danmu-server-through-2.8.9-authentication-bypass-via-config-history-rollback"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111643","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111643","identifiers":["CVE-2026-111643"]},"retained":false,"historicalAffected":[]}],"coverage":[]}