Marimo · Marimo
CVE-2026-39987
marimo Affected by Pre-Auth Remote Code Execution via Terminal WebSocket Authentication Bypass
چیست
marimo is a reactive Python notebook. Prior to 0.23.0, Marimo has a Pre-Auth RCE vulnerability. The terminal WebSocket endpoint /terminal/ws lacks authentication validation, allowing an unauthenticated attacker to obtain a full PTY shell and execute arbitrary system commands. Unlike other WebSocket endpoints (e.g., /ws) that correctly call validate_auth() for authentication, the /terminal/ws endpoint only checks the running mode and platform support before accepting connections, completely skipping authentication verification. This vulnerability is fixed in 0.23.0.
CISA: Marimo contains an pre-authorization remote code execution vulnerability, allowing an unauthenticated attacked to shell access and execute arbitrary system commands.
چه باید کرد
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
مهلت برای نهادهای فدرال آمریکا: ۷ مهٔ ۲۰۲۶
منابع: Known Exploited Vulnerabilities (CISA، مالکیت عمومی)، CVE records (cve.org) و EPSS (FIRST). احتمال حمله برآورد EPSS از این است که کسی در ۳۰ روز آینده برای سوءاستفاده از این آسیبپذیری تلاش کند.