Authenticated RCE via exposed Playwright browser object
Published Mar 9, 2026 · Updated Mar 9, 2026
Remote code execution in OneUptime before 10.0.20 allows remote authenticated users to execute arbitrary code on the probe service. SyntheticMonitor.execute passes project-controlled Playwright code into VMRunner.runCodeInNodeVM while injecting live browser and page objects; browserType().launch then accepts an attacker-chosen executable path and arguments. Ordinary project membership is sufficient, and exploitation runs commands in the probe host or container context, exposing its internal services and secrets.
Summary
What happened
Remote code execution in OneUptime before 10.0.20 allows remote authenticated users to execute arbitrary code on the probe service. SyntheticMonitor.execute passes project-controlled Playwright code into VMRunner.runCodeInNodeVM while injecting live browser and page objects; browserType().launch then accepts an attacker-chosen executable path and arguments. Ordinary project membership is sufficient, and exploitation runs commands in the probe host or container context, exposing its internal services and secrets.
The record
- CVE
- CVE-2026-30921
- Published
- Mar 9, 2026
- Updated
- Mar 9, 2026
- Vendor
- OneUptime
- Product
- OneUptime
- Classifications
- CWE-749, T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 9, 2026CVE publishedPublication date reported by the CVE source.
- Mar 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 10.0.20
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GitHub advisory authenticated probe RCE PoCproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo