by Kastro
Paper/Archive/CVE-2026-111643

CVE-2026-111643

l429609201 misaka_danmu_server — Misaka Danmu Server through 2.8.9 Authentication Bypass via Config-History Rollback

EPSS 0.6%public exploitCVSS 9.8
critical.is priorityof 100
49
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 47.7.477 × 209.5Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
misaka_danmu_server≤ 2.8.9–CNA

Scores by source

VulnCheck (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheck (CNA)9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

exploithackmd.io/@hieuPenguinnn/misaka-danmu-server-ui-api-missing-authenticationwriteupgithub.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/api/ui/config_history.py#L51-L66writeupgithub.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/security.py#L136-L182writeupvulncheck.com/advisories/misaka-danmu-server-through-2.8.9-authentication-bypass-via-config-history-rollback