AUGUST 16, 2026
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Case File

CVE-2026-67618

MEDIUM · CVSS 6.5 EPSS 0.20% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-04 · Last synced 2026-08-16

CyberRota Analysis

AI-Generated

Marimo versions prior to 0.23.15 are vulnerable to a configuration injection flaw that enables notebook authors to exfiltrate operator API keys by embedding a malicious base_url in inline script metadata. This vulnerability allows attackers to intercept API keys without requiring any execution of notebook cells, posing a significant risk to sensitive credentials. Organizations using Marimo, particularly those integrating AI functionalities, should prioritize patching to mitigate potential data breaches.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-67618
Severity
MEDIUM
CVSS
6.5
EPSS
0.20%

Original NVD Description

marimo before 0.23.15 contains a configuration injection vulnerability that allows notebook authors to exfiltrate operator API keys by embedding a malicious base_url in PEP-723 inline script metadata, which is merged into session configuration with higher precedence than the operator's own settings due to insufficient sanitization in sanitize_pyproject_dict. When an operator opens the crafted notebook and makes an AI request, marimo resolves the attacker-controlled base_url from the notebook config while falling back to the operator's OPENAI_API_KEY environment variable for authentication, transmitting the API key to the attacker-controlled endpoint without requiring any cell execution.