CVE-2026-111643
misaka_danmu_server: Misaka Danmu Server through 2.8.9 Authentication Bypass via Config-History Rollback
l429609201 misaka_danmu_server
CVSS
9.3CriticalExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 23 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.45%Chance of exploitation activity in the next 30 days, higher than 37% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- misaka_danmu_serveraffected: all versions through 2.8.9CVE List
References 4
- github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/security.py#L136-L182Advisoryvia CVE List
- vulncheck.com/advisories/misaka-danmu-server-through-2.8.9-authentication-bypass-via-config-history-rollbackAdvisoryvia CVE List
- hackmd.io/@hieuPenguinnn/misaka-danmu-server-ui-api-missing-authenticationExploitvia CVE List
- github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/api/ui/config_history.py#L51-L66Referencevia CVE List