CVE-2026-27574CWE-94

OneUptime: node:vm sandbox escape in probe allows any project member to achieve RCE

Critical · published February 21, 2026

CVSS v3.1
10.0
EPSS
1%
Percentile
52.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
10.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00689 · 52.3th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-02-21T10:13Z
EPSS history
Timeline
  • 21 FEB 10:13Z
    OneUptime: node:vm sandbox escape in probe allows any project member to achieve RCE
    cvelistv5