CVE-2026-33396
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.
How to fix
- hackerbay oneuptime10.0.35 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| hackerbay oneuptime | v < 10.0.35 | 10.0.35 |
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Attack Surface Management
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