MEIFP – Most Exploited Internet-Facing Products

marimo-team

Products: marimo

40.6

Score

CVEs

Active

PoC

KEV

#89

Rank

Period:

Product:

CVE ID	Published	CVSS	Exploit	KEV	AC	PR	Auto	Score(hover)	Affected Products	Description
CVE-2026-39987	2026-04-09	9.3v4.0	ACTIVE		Low	None	YES	40.6	marimo	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

Each CVE: 10 pts base (Active only), boosted by:

KEV×2.0AC: Low×1.2PR: None×1.3PR: Low×1.1Auto×1.3