CVE-2026-30887

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.

The following products are affected by CVE-2026-30887 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-30887.

URL	Resource
https://github.com/OneUptime/oneuptime/security/advisories/GHSA-h343-gg57-2q67