CVE-2025-65966 OneUptime Unauthorized User Creation via API
Low-permission users can create new accounts via direct API requests, bypassing intended interface restrictions in OneUptime.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-65966?
CVE-2025-65966 is a high-severity missing authorization vulnerability in oneuptime, published on 26 Nov 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-285
Which versions are affected by CVE-2025-65966?
2 open source packages ship an affected version, including @oneuptime/common. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
@oneuptime/common npm | All versions | 9.1.0 |
@oneuptime/common npm | All versions | 9.1.0 |
Products include Hackerbay Oneuptime.
How do I fix CVE-2025-65966?
Upgrade @oneuptime/common to 9.1.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-65966 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-65966 exists.
Other vulnerabilities in oneuptime
- CVE-2026-33396 Code injection in oneuptime
- CVE-2026-32306 OneUptime ClickHouse SQL Injection via Aggregate Query Parameters
- CVE-2026-30956 OneUptime has authorization bypass via client‑controlled is-multi-tenant-query header
- CVE-2026-30957 OneUptime Synthetic Monitor RCE via exposed Playwright browser object
- CVE-2026-30887 OneUptime Affected by Unsandboxed Code Execution in Probe Allows Any Project Member to Achieve RCE
Sources
Also known as GHSA-m449-vh5f-574g.