CVE-2026-30887
Critical · 9.9CVSS
9.9
EPSS
0.6%
Published
Mar 10, 2026
CISA due date
—
The record
OneUptime is a solution for monitoring and managing online services. Prior to 10.0.18, OneUptime allows project members to run custom Playwright/JavaScript code via Synthetic Monitors to test websites. However, the system executes this untrusted user code inside the insecure Node.js vm module. By leveraging a standard prototype-chain escape (this.constructor.constructor), an attacker can bypass the sandbox, gain access to the underlying Node.js process object, and execute arbitrary system commands (RCE) on the oneuptime-probe container. Furthermore, because the probe holds database/cluster credentials in its environment variables, this directly leads to a complete cluster compromise. This vulnerability is fixed in 10.0.18.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | @oneuptime/common | 0 | 10.0.18 |
Related vulnerabilities
- GHSA-h343-gg57-2q67 OneUpTime's Unsandboxed Code Execution in Probe Allows Any Project Member to Achieve RCE Same vulnerability
- CVE-2026-30959 OneUptime is a solution for monitoring and managing online services. Also affects @oneuptime/common
- CVE-2026-30956 OneUptime is a solution for monitoring and managing online services. Also affects @oneuptime/common
- CVE-2026-30957 OneUptime is a solution for monitoring and managing online services. Also affects @oneuptime/common
- CVE-2026-30921 OneUptime is a solution for monitoring and managing online services. Also affects @oneuptime/common
- CVE-2026-30920 OneUptime is a solution for monitoring and managing online services. Also affects @oneuptime/common
- GHSA-cw6x-mw64-q6pv OneUptime has WhatsApp Resend Verification Authorization Bypass Also affects @oneuptime/common
- GHSA-jw8q-gjvg-8w4q OneUptime has Synthetic Monitor RCE via exposed Playwright browser object Also affects @oneuptime/common