CVE-2026-30887
CVE-2026-30887 · OneUptime Affected by Unsandboxed Code Execution in Probe Allows Any Project Member to Achieve RCE
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 10.0 · Critical · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
oneuptime
- Versions
- < 10.0.18: Affected
No fix published
@oneuptime/common npm
- Affected ranges
- SEMVER: < 10.0.18
Update to 10.0.18