{"id":"CVE-2026-111643","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-111643","summary":"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…","details":"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.","published":"2026-10-16T18:17:45.013","modified":"2026-10-16T18:17:45.013","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/api/ui/config_history.py#L51-L66"},{"type":"WEB","url":"https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/security.py#L136-L182"},{"type":"WEB","url":"https://hackmd.io/@hieuPenguinnn/misaka-danmu-server-ui-api-missing-authentication"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/misaka-danmu-server-through-2.8.9-authentication-bypass-via-config-history-rollback"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-10-16T18:17:45.013"}}