{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.23.15"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "d8789daa177c759747fa2c36b985a7c36c37f048"
            },
            {
              "fixed": "1a21bd71e258438d2511136b5edacc94c08855f4"
            }
          ],
          "repo": "https://github.com/marimo-team/marimo",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-345"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67618.json"
  },
  "details": "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.",
  "id": "CVE-2026-67618",
  "modified": "2026-08-12T03:51:46.992660326Z",
  "published": "2026-08-04T14:30:48.244Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67618.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/marimo-team/marimo/releases/tag/0.23.15"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67618"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/marimo-api-key-exfiltration-via-malicious-notebook-pep-723-metadata"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/marimo-team/marimo/pull/10281"
    },
    {
      "type": "FIX",
      "url": "https://github.com/marimo-team/marimo/commit/1a21bd71e258438d2511136b5edacc94c08855f4"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/marimo-team/marimo"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "marimo \u003c 0.23.15 API Key Exfiltration via Malicious Notebook PEP-723 Metadata"
}