CVE Vulnerability Advisory Database
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2026-04-09
marimo Reactive Python Notebook Pre-Auth Remote Code Execution (RCE) via Terminal WebSocket Authentication Bypass (CVE-2026-39987)
[Affected Scope] All versions of marimo open-source Python notebook prior to 0.23.0
[Impact] Unauthenticated remote attackers can establish a connection to the /terminal/ws endpoint, obtaining a full PTY shell and executing arbitrary system commands
[Mitigation] Immediately upgrade the marimo package to version 0.23.0 or higher