What is CVE-2025-65966?

CVE-2025-65966 is a high-severity vulnerability in Hackerbay Oneuptime, classified under Improper Authorization. CVSS score: 8.1/10. Published 2025-11-26.

How severe is CVE-2025-65966?

High severity. CVSS v3 base score is 8.1 out of 10.

Auth bypass in Hackerbay Oneuptime

CVE-2025-65966

OneUptime is a solution for monitoring and managing online services. In version 9.0.5598, a low-permission user can create new accounts through a direct API request instead of being restricted to the intended interface. This issue has been patched in version 9.1.0.

EPSS: 0.003 (22.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

Affected products

Hackerbay Oneuptime — versions 9.0.5598
Oneuptime — versions = 9.0.5598

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2025-65966?: CVE-2025-65966 is a high-severity vulnerability in Hackerbay Oneuptime, classified under Improper Authorization. CVSS score: 8.1/10. Published 2025-11-26.
How severe is CVE-2025-65966?: High severity. CVSS v3 base score is 8.1 out of 10.