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.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 30 Oct 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Uptime Kuma through 2.5.8 Race Condition Admin Creation via Setup Handler | |
| First Time appeared |
Uptime-kuma Project
Uptime-kuma Project uptime-kuma |
|
| Weaknesses | CWE-367 | |
| CPEs | cpe:2.3:a:uptime-kuma_project:uptime-kuma:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Uptime-kuma Project
Uptime-kuma Project uptime-kuma |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-10-30T15:54:36.118Z
Reserved: 2026-10-30T10:53:26.670Z
Link: CVE-2026-119552
No data.
Status : Received
Published: 2026-10-30T12:16:42.100
Modified: 2026-10-30T12:16:42.100
Link: CVE-2026-119552
No data.
OpenCVE Enrichment
Updated: 2026-10-30T13:15:15Z
Weaknesses