Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-30957

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 50.2%
CVSS Severity
CVSS v3 Score 9.9
Products affected by CVE-2026-30957


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