Oneuptime
CVE-2026-27574
CRITICAL
GHSA-v264-xqh4-9xmm
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate as low-privilege user
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DeliveryCreate custom JavaScript monitor
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ExploitInsert sandbox escape payload
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ExecutionExecute arbitrary code in probe process
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ImpactAccess cluster credentials from environment
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V1 - Encoding and Sanitization Code injection prevention, sandbox exec
MITRE ATT&CK
2 techniques across 2 tactics: Execution, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | OneUptime versions 9.5.13 and below with custom JavaScript monitor feature enabled. Requires valid user account with Project role (lowest privilege). Probe must run with host networking and contain ONEUPTIME_SECRET, DATABASE_PASSWORD, REDIS_PASSWORD, CLICKHOUSE_PASSWORD in environment variables. |
| Impact | CVSS 9.9. |
| Exploit ScenarioDerived | Inject code via custom JS monitor for RCE. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Code injection in OneUptime monitoring via custom JS monitor using vm module. PoC and patch available.
Earlier versions of this analysis (1)
Code injection in OneUptime JS monitor.
RemediationAI
Update OneUptime.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in npm
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
CWE-94 using Node.js vm module (not sandboxed).
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- Exploit and PoC references, threat intelligence from 22 sources
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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
Lifecycle Timeline
3DescriptionGitHub Advisory
OneUptime is a solution for monitoring and managing online services. In versions 9.5.13 and below, custom JavaScript monitor feature uses Node.js's node:vm module (explicitly documented as not a security mechanism) to execute user-supplied code, allowing trivial sandbox escape via a well-known one-liner that grants full access to the underlying process. Because the probe runs with host networking and holds all cluster credentials (ONEUPTIME_SECRET, DATABASE_PASSWORD, REDIS_PASSWORD, CLICKHOUSE_PASSWORD) in its environment variables, and monitor creation is available to the lowest role (ProjectMember) with open registration enabled by default, any anonymous user can achieve full cluster compromise in about 30 seconds. This issue has been fixed in version 10.0.5.
Articles & Coverage 1
Executive ViewAI
A critical vulnerability (CVSS 9.9) in OneUptime monitoring infrastructure could allow attackers to gain complete control of affected systems and the services they monitor. Organizations using OneUptime for service monitoring face potential widespread outage visibility loss and operational disruption if exploited.
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Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Affected Products (CPE)GitHub Advisory
OS command injection in OneUptime monitoring platform before 10.0.7. Authenticated users can execute arbitrary commands
OneUptime prior to 10.0.21 has a fourth vulnerability in Synthetic monitoring exposing dangerous functionality.
OneUptime monitoring platform prior to 10.0.18 allows code injection (CVSS 9.9) enabling RCE through the monitoring conf
OneUptime prior to 10.0.21 has a third authorization bypass enabling low-privileged users to access admin functions.
OneUptime prior to 10.0.20 exposes dangerous functionality in Synthetic monitoring that enables code execution.
OneUptime is a solution for monitoring and managing online services. Rated high severity (CVSS 8.8), this vulnerability
Unauthenticated path traversal in OneUptime prior to 10.0.21 lets remote attackers read arbitrary files from the server
OneUptime versions prior to 10.0.19 allow unauthenticated attackers to hijack GitHub App integrations across projects by
OneUptime is a solution for monitoring and managing online services. Rated high severity (CVSS 8.3), this vulnerability
OneUptime versions 10.0.11 and earlier contain an improper WebAuthn implementation where server-side challenge validatio
OneUptime is a solution for monitoring and managing online services. Rated medium severity (CVSS 6.9), this vulnerabilit
Remote command execution can be achieved by low-privileged authenticated users (ProjectMember role) in OneUptime monitor
Exploit-DB