CVE-2026-111643
Misaka Danmu Server through 2.8.9 contains an authentication bypass vulnerability that allows…
- Risk score
- 71/100
- CVSS
- 9.8 v3.1
- Exploit chance (30 days)
- 0.4%
- Published
- 16 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 we…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.8 critical
- Remotely exploitable without logging in
References
- https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/api/ui/config_history.py#L51-L66
- https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/security.py#L136-L182
- https://hackmd.io/@hieuPenguinnn/misaka-danmu-server-ui-api-missing-authentication
- https://www.vulncheck.com/advisories/misaka-danmu-server-through-2.8.9-authentication-bypass-via-config-history-rollback
- https://hackmd.io/@hieuPenguinnn/misaka-danmu-server-ui-api-missing-authentication
Original 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.
Last activity 16 Oct 2026. Patch Forecast updates every hour.