CVE-2026-111643

Published: Oct 16, 2026Modified: Oct 23, 2026Deferred

9.3

Vector

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

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.

Related CWEs

CWE-306

Missing Authentication for Critical Function

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.

References (5)

https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/api/ui/config_history.py#L51-L66

Source: disclosure@vulncheck.com

https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/security.py#L136-L182

Source: disclosure@vulncheck.com

https://hackmd.io/@hieuPenguinnn/misaka-danmu-server-ui-api-missing-authentication

Source: disclosure@vulncheck.com

https://www.vulncheck.com/advisories/misaka-danmu-server-through-2.8.9-authentication-bypass-via-config-history-rollback

Source: disclosure@vulncheck.com

https://hackmd.io/@hieuPenguinnn/misaka-danmu-server-ui-api-missing-authentication

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.