What is CVE-2026-67618?

CVE-2026-67618 is a medium-severity vulnerability in Marimo-team Marimo, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.5/10. Published 2026-08-04.

How severe is CVE-2026-67618?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Marimo-team Marimo

CVE-2026-67618

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 configura…

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Marimo-team Marimo — versions 0

Weakness classification (CWE)

CWE-345 — Insufficient Verification of Data Authenticity

References

disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (issue-tracking)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-67618?: CVE-2026-67618 is a medium-severity vulnerability in Marimo-team Marimo, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.5/10. Published 2026-08-04.
How severe is CVE-2026-67618?: Medium severity. CVSS v3 base score is 6.5 out of 10.