CVE-2026-119552
MEDIUM
NVD
CVSS Score
4.8
Severity
MEDIUM
Published
Oct 30, 2026
Vendor
unknown
Description
Uptime Kuma through 2.5.8 contains a race condition in the Socket.IO first-run setup handler that allows unauthenticated attackers to create an additional administrator account. Attackers can send concurrent setup requests during the bcrypt hashing window to bypass the empty user table check, then modify monitors, API keys, and enable disableAuth.