// #python-notebook

Marimo AI Notebook RCE CVE-2026-39987 Exploited at Scale — 662 Events in Three Days, NKAbuse Malware Deployed

CVE-2026-39987 (CVSS 9.3) in the Marimo Python notebook has been weaponised at scale, with Sysdig recording 662 exploitation events over three days and attackers completing credential theft within minutes of gaining access. The unauthenticated WebSocket RCE is being used to deploy NKAbuse, a multi-platform malware using the NKN peer-to-peer network for command and control. Upgrade to Marimo 0.23.0 immediately.