CVE-2026-39987

CVE-2026-39987 For Marimo 0.20.4 PoC ⚠️ This tool is intended for educational purposes and authorized security testing only. The creator is not responsible for any unauthorized or illegal use. Use at your own risk. ⚠️ Info: CVE-2026-39987 is a critical pre-authentication Remote Code Execution RCE...

CVE-2026-39987_POC

PoC — CVE-2026-39987 · Marimo Pre-Auth RCE CVSS 4.0: 9.3 Critical · AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H Affects: marimo 2 calls to validateauth. terminal.py - 0 @requires, 0 validateauth. -- the flaw. The AuthBackend middleware protects HTTP and the /ws websocket, but /terminal/ws accepts the...