Is there a public exploit for CVE-2026-67618?

No public exploit for CVE-2026-67618 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-67618?

CVE-2026-67618 scores CVSS 7.1 (v4.0), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.3%.

What does CVE-2026-67618 affect?

CVE-2026-67618 affects marimo-team marimo.

7.1 High

marimo before 0.23.15 contains a configuration injection vulnerability that allows notebook authors to exfiltrate operator API keys by…

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 baseurl 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 sanitizepyprojectdict. When an operator opens the crafted notebook and makes an AI request, marimo resolves the attacker-controlled baseurl from the notebook config while falling back to the operator's OPENAIAPIKEY environment variable for authentication, transmitting the API key to the attacker-controlled endpoint without requiring any cell execution.

Assessment

CVSS: 7.1 (v4.0)
Severity: High
EPSS: 0.3% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 4 August 2026
Last updated: 8 November 2026
Affected: marimo-team · marimo
Assigner: VulnCheck

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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