Insufficient Verification of Data Authenticity

Overview marimo is an A library for making reactive notebooks and apps Affected versions of this package are vulnerable to Insufficient Verification of Data Authenticity via sanitizepyprojectdict in the PEP-723 script metadata handling path. An attacker can exfiltrate an operator’s API key by...

CVE-2026-67618

The vulnerability CVE-2026-67618 affects marimo before version 0.23.15. It stems from insufficient sanitization in sanitize_pyproject_dict, allowing a notebook author to inject a malicious base_url via PEP-723 inline script metadata. The attacker-controlled base_url is merged into session configu...

PT-2026-67726

Name of the Vulnerable Software and Affected Versions marimo versions prior to 0.23.15 Description Configuration injection occurs due to insufficient sanitization in the sanitize pyproject dict function. This allows notebook authors to embed a malicious base url within PEP-723 inline script...

CVE-2026-67618: Insufficient Verification of Data Authenticity

marimo before 0.23.15 contains a configuration injection vulnerability that allows notebook authors to exfiltrate operator API keys by embedding a malicious baseurl in PEP-723 inline script metadata, which is merged into session configuration with higher precedence than the operator's own setting...