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.

Related CPE's


Could not find any relations

Weaknesses



CWE-367

CVSS impact metrics


CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N

4.8 · Medium

Information


Source identifier

[email protected]

Vulnerability status

Deferred

Published

2026-10-30T12:16:42.100Z

8 hours ago

Last modified

2026-10-30T19:23:25.493Z

1 hour ago