PyPI/marimo CVE-2026-39987: critical 9.8, exploited, EPSS 99.56%
Marimo: Pre-Auth Remote Code Execution via Terminal WebSocket Authentication Bypass
Action: Upgrade marimo to 0.23.0 or later.
pip install marimo==0.23.0Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 0.23.0 | - |
Fixed versions
| 0.23.0 |
Sources
- osv: GHSA-2679-6mx9-h9xc
- kev: CVE-2026-39987
- https://github.com/marimo-team/marimo/security/advisories/GHSA-2679-6mx9-h9xc
- https://nvd.nist.gov/vuln/detail/CVE-2026-39987
- https://github.com/marimo-team/marimo/pull/9098
- https://github.com/marimo-team/marimo/commit/c24d4806398f30be6b12acd6c60d1d7c68cfd12a
- https://github.com/marimo-team/marimo
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-39987
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-39987
- https://www.sysdig.com/blog/marimo-oss-python-notebook-rce-from-disclosure-to-exploitation-in-under-10-hours
CVE-2026-39987 · published · modified · JSON