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ID:12593 - Exploit for Missing Authentication for Critical Function in Marimo - CVE-2026-39987
ID:12593 - Exploit for Missing Authentication for Critical Function in Marimo - CVE-2026-39987
Published: April 17, 2026
Vulnerability identifier: #VU126426
Vulnerability risk: Critical
CVE-ID: CVE-2026-39987
CWE-ID: CWE-306
Exploitation vector: Remote access
Vulnerable software:
Marimo
Marimo
Link to public exploit:
Vulnerability description
The vulnerability allows a remote attacker to execute arbitrary system commands.
The vulnerability exists due to missing authentication for a critical function in the terminal/ws WebSocket endpoint when handling WebSocket connections. A remote attacker can connect to the endpoint to execute arbitrary system commands.
The issue can expose a full interactive shell without authentication.
Remediation
Install security update from vendor's website.