CVE-2026-39987: Marimo RCE exploited in hours after disclosure
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
| CVE-2026-33017 | Unauthenticated RCE in Langflow AI Workflow Builder | 9.3 | 96% | KEVPoC ×6 | KEV |
| CVE-2026-39987 | Unauthenticated Remote Code Execution in Marimo Python Notebook | 9.3 | 100% | KEVPoC ×8 | KEV |
From the original article
3 min read at securityaffairs.com
A critical flaw, tracked as CVE-2026-39987, in the open-source Python notebook tool Marimo was exploited within 10 hours of disclosure. A critical flaw in Marimo, tracked as CVE-2026-39987 (CVSS score of 9. 3) was exploited just 10 hours after disclosure (On April 8, 2026).
By @securityaffairs · securityaffairs.com
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