Critical severity9.8NVD Advisory· Published Oct 16, 2026· Updated Oct 16, 2026
CVE-2026-111643
CVE-2026-111643
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.
Affected products
1- Range: <=2.8.9
Patches
Vulnerability mechanics
References
4- github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/api/ui/config_history.pynvd
- github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/security.pynvd
- hackmd.io/@hieuPenguinnn/misaka-danmu-server-ui-api-missing-authenticationnvd
- www.vulncheck.com/advisories/misaka-danmu-server-through-2.8.9-authentication-bypass-via-config-history-rollbacknvd
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