{"id":"CVE-2026-111643","summary":"Misaka Danmu Server through 2.8.9 Authentication Bypass via Config-History Rollback","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.","modified":"2026-10-21T02:55:49.072452179Z","published":"2026-10-16T17:39:13.043Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111643.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-306"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111643.json"},{"type":"PACKAGE","url":"https://github.com/l429609201/misaka_danmu_server"},{"type":"ARTICLE","url":"https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/api/ui/config_history.py#L51-L66"},{"type":"ARTICLE","url":"https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/security.py#L136-L182"},{"type":"ADVISORY","url":"https://hackmd.io/@hieuPenguinnn/misaka-danmu-server-ui-api-missing-authentication"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-111643"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/misaka-danmu-server-through-2.8.9-authentication-bypass-via-config-history-rollback"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/l429609201/misaka_danmu_server","events":[{"introduced":"0"},{"last_affected":"01751526f6e4154bcc8f517481d02b68cb2684a9"}],"database_specific":{"extracted_events":[{"source":"AFFECTED_FIELD","strategy":"StandardRange","range":[{"introduced":"0"},{"last_affected":"2.8.9"}]}]}}],"versions":["v2.8.9","v2.8.8","v2.8.7","v2.8.6","v2.8.5","v2.8.4","v2.8.3","v2.8.2","v2.8.1","v2.8.0","v2.7.9","v2.7.8","v2.7.7","v2.7.6","v2.7.5","v2.7.4","v2.7.3","v2.7.2","v2.7.1","v2.7.0","v2.6.9","v2.6.8","v2.6.7","v2.6.6","v2.6.5","v2.6.4","v2.6.3","v2.6.2","v2.6.1","v2.6.0","v2.5.9-1","v2.5.9","v2.5.8","v2.5.7","v2.5.6","v2.5.5","v2.5.4","v2.5.3","v2.5.2-1","v2.5.2","v2.5.1","v2.5.0","v2.4.3","v2.4.2","v2.4.1","v2.4.0","v2.3.9","v2.3.8","v2.3.7","v2.3.6","v2.3.5","v2.3.4","v2.3.3","v2.3.2","v2.3.1","v2.3.0","v2.2.9","v2.2.8","v2.2.7","v2.2.6","v2.2.5","v2.2.4","v2.2.3","v2.2.2","v2.2.1","v2.2.0","v2.1.9","v2.1.8","v2.1.7","v2.1.6","v2.1.5","v2.1.4","v2.1.3","v2.1.2","v2.1.1","v2.1.0","v2.0.24","v2.0.23","v2.0.22","v2.0.21","v2.0.20","v2.0.19","v2.0.18","v2.0.17","v2.0.16","v2.0.15","v2.0.14","v2.0.13","v2.0.12","v2.0.11","v2.0.10","v2.0.9","v2.0.8","v2.0.7","v2.0.6","v2.0.5","v2.0.4","v2.0.3","v2.0.2","v2.0.1","v2.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111643.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}