CVE-2026-39987 · netVigilance record NV26-0095
Marimo Remote Code Execution
past due
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA deadline 2026-05-07 · passed 4 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
Marimo contains an pre-authorization remote code execution vulnerability, allowing an unauthenticated attacked to shell access and execute arbitrary system commands.
Who is affected
Marimo Marimo. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-306.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 4 months ago
Sources
- NVD entry for CVE-2026-39987 nvd.nist.gov/vuln/detail/CVE-2026-39987
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- github.com github.com/marimo-team/marimo/security/advisories/GHSA-2679-6mx9-h9xc
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2026-39987