CVE-2026-67618
6.5 MEDIUMpublic exploit availablePublished 2026-08-04 · Updated 2026-08-04
AI risk analysis
- Summary
- The flaw allows notebook authors to inject a malicious base_url that exfiltrates operator API keys, compromising security.
- Exploitability
- Exploitation requires embedding a specific script in a crafted notebook and having an operator open it; moderate technical skill is needed.
- Blast radius
- If exploited, this could lead to unauthorized access to sensitive API keys across multiple operators' environments.
- Prioritized remediation
- Update marimo to version 0.23.15 or later to mitigate the vulnerability.
Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Weaknesses
CWE-345
Public exploit & PoC references
All references
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.