Vulnerability · Published Oct 16, 2026 · Assigned by VulnCheck

CVE-2026-111644Misaka Danmu Server through 2.8.9 Missing Authentication on /api/ui Routes

High 7.3

In plain English

A high-severity missing authentication in misaka_danmu_server from l429609201. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 31% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)0.4%top 69.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

Misaka Danmu Server through 2.8.9 contains a missing authentication vulnerability that allows unauthenticated attackers to access audit, diagnostics, data-check, scan-index and health routes under /api/ui lacking the get_current_user dependency. Attackers can read audit logs with login IPs, server logs and environment paths, delete episode rows, clear media-server mappings, and wipe audit history.

Affected products (as reported)

Vendor	Product	Versions
l429609201	misaka_danmu_server	0 – through 2.8.9

Weakness: CWE-306 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

References

https://hackmd.io/@hieuPenguinnn/misaka-danmu-server-ui-api-missing-authentication third-party-advisory
https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/api/ui/audit.py#L31-L66 technical-description
https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/api/ui/data_check.py#L116-L140 technical-description
https://github.com/l429609201/misaka_danmu_server/blob/v2.8.9/src/api/ui/diagnostics.py#L156-L210 technical-description
VulnCheck Advisory: Misaka Danmu Server through 2.8.9 Missing Authentication on /api/ui Routes third-party-advisory