cvedb.io
CVE-2026-30887
CRITICAL · CVSS 9.9
EPSS exploitation probability: 0%
Published 2026-03-10T17:40:14.887 · Last modified 2026-06-17T10:33:05.737

Summary

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 products

hackerbay — oneuptime

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.