CVE-2026-30921
OneUptime is a solution for monitoring and managing online services. Prior to 10.0.20, OneUptime Synthetic Monitors allow low-privileged project users to submit custom Playwright code that is executed on the oneuptime-probe service. In the current implementation, this untrusted code is run inside Node's vm and is given live host Playwright objects such as browser and page. This creates a distinct server-side RCE primitive: the attacker does not need the classic this.constructor.constructor(...) sandbox escape. Instead, the attacker can directly use the injected Playwright browser object to reach browser.browserType().launch(...) and spawn an arbitrary executable on the probe host/container. This vulnerability is fixed in 10.0.20.
Scoring
- Severity
- CRITICAL
- CVSS base score
- 10
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS probability
- 0.45%
- CWE
- CWE-749
- Published
- 2026-03-09
- Last modified
- 2026-03-10
Affected products
- OneUptime oneuptime
Weakness type
Related vulnerabilities
- CVE-2026-20293 — Cisco UCS and UCS-Based Appliances UEFI Shell Secure Boot Bypass Vulnerability
- CVE-2026-86711 — electerm before 5.3.15 Arbitrary Command Execution via Unvalidated runGlobalAsync IPC Bridge
- CVE-2026-75810 — Exposed Dangerous Method or Function in ASUS Armoury Crate allow a local user to cause a brief...
- CVE-2026-18263 — Parallels RAS Client RDP Backend Service Exposed Dangerous Function Local Privilege Escalation Vulnerability
- CVE-2026-18262 — Parallels RAS Client RDP Backend Service Exposed Dangerous Function Local Privilege Escalation Vulnerability
- CVE-2026-13121 — Parallels RAS Client RDP Backend Service Exposed Dangerous Function Local Privilege Escalation Vulnerability
- CVE-2026-52877 — Streambert : Insecure Protocol Execution in open-external IPC Handler
- CVE-2026-66781 — Submariner-operator: pprof debug endpoint enabled by default on 0.0.0.0:8082 without authentication