Description
OneUptime is an open-source monitoring and observability platform. Prior to version 10.0.35, a low-privileged authenticated user (ProjectMember) can achieve remote command execution on the Probe container/host by abusing Synthetic Monitor Playwright script execution. Synthetic monitor code is executed in VMRunner.runCodeInNodeVM with a live Playwright page object in context. The sandbox relies on a denylist of blocked properties/methods, but it is incomplete. Specifically, _browserType and launchServer are not blocked, so attacker code can traverse `page.context().browser()._browserType.launchServer(...)` and spawn arbitrary processes. Version 10.0.35 contains a patch.
Affected products
hackerbay: oneuptime
References3
- github.com/OneUptime/oneuptime/security/advisories/GHSA-cqpg-ph… ExploitVendor Advisory
- github.com/OneUptime/oneuptime/security/advisories/GHSA-cqpg-ph… ExploitVendor Advisory
- github.com/OneUptime/oneuptime/commit/e8e4ee3ff0740eb131045ab3d… Patch
Metrics
- CVSS 3.1
-
9.9
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - EPSS — exploit probability
- 1% percentile: 59 · as of 12 November 2026
- CWE
- CWE-78CWE-184CWE-693
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.