Vulnerability details

CVE-2026-27574

OneUptime oneuptime

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

CVSS 3.1

10.0Critical

Official description

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.

CVSS scores

Score	Version	Source	Vector
10.0Critical	3.1	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
OneUptime	oneuptime	< 10.0.5	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/OneUptime/oneuptime/security/advisories/GHSA-v264-xqh4-9xmm x_refsource_CONFIRM
https://github.com/OneUptime/oneuptime/commit/7f9ed4d43945574702a26b7c206e38cc344fe427 x_refsource_MISC

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Details

Published: 2026-02-21
Last updated: 2026-02-24
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.56%

Probability of exploitation in 30 days

46.8%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-94
Improper Control of Generation of Code ('Code Injection')