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.
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (21.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Hackerbay Oneuptime — versions 9.0.5598
- Oneuptime — versions = 9.0.5598
Weakness classification (CWE)
References
- github.com/OneUptime/oneuptime/security/advisories/GHSA-m449-vh5f-574g (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.