CVE-2026-30957
CVE-2026-30957 · OneUptime Synthetic Monitor RCE via exposed Playwright browser object
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 10.0 · Critical · EPSS 1.2% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
oneuptime
- Versions
- < 10.0.21: Affected
No fix published
@oneuptime/common npm
- Affected ranges
- SEMVER: < 10.0.21
Update to 10.0.21