Command Execution on Marimo Notebook via CVE-2026-39987

Duo Tech@duotech

•updated Jul 30, 2026•0•0•14

Detects shell/command execution spawned by a Marimo notebook server process where the shell command line contains suspicious indicators (download-and-execute patterns, base64-encoded commands, reverse-shell syntax, or outbound network utility invocation), consistent with exploitation of CVE-2026-39987 leading to command execution on Marimo notebook processes.