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Description

OneUptime is a solution for monitoring and managing online services. Prior to 10.0.21, OneUptime Synthetic Monitors allow a low-privileged authenticated project user to execute arbitrary commands on the oneuptime-probe server/container. The root cause is that untrusted Synthetic Monitor code is executed inside Node's vm while live host-realm Playwright browser and page objects are exposed to it. A malicious user can call Playwright APIs on the injected browser object and cause the probe to spawn an attacker-controlled executable. This is a server-side remote code execution issue. It does not require a separate vm sandbox escape. This vulnerability is fixed in 10.0.21.

PUBLISHED Reserved 2026-03-07 | Published 2026-03-10 | Updated 2026-03-10 | Assigner GitHub_M




CRITICAL: 10.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Problem types

CWE-749: Exposed Dangerous Method or Function

Product status

< 10.0.21
affected

References

github.com/...uptime/security/advisories/GHSA-jw8q-gjvg-8w4q

github.com/OneUptime/oneuptime/releases/tag/10.0.21

cve.org (CVE-2026-30957)

nvd.nist.gov (CVE-2026-30957)

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