Node.js CVE-2026-30887
CRITICAL
GHSA-h343-gg57-2q67
Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
4Blast Radius
ecosystem impact- 1 npm packages depend on @oneuptime/common (1 direct, 0 indirect)
Ecosystem-wide dependent count for version 10.0.18.
DescriptionGitHub Advisory
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.
AnalysisAI
OneUptime monitoring platform prior to 10.0.18 allows code injection (CVSS 9.9) enabling RCE through the monitoring configuration.
Technical ContextAI
OneUptime < 10.0.18 has a CWE-94 code injection in monitoring configurations. First of four OneUptime vulnerabilities.
RemediationAI
Update OneUptime.
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Same weakness CWE-94 – Code Injection
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External POC / Exploit Code
Leaving vuln.today