Description
marimo is a reactive Python notebook. Prior to 0.23.0, Marimo has a Pre-Auth RCE vulnerability. The terminal WebSocket endpoint /terminal/ws lacks authentication validation, allowing an unauthenticated attacker to obtain a full PTY shell and execute arbitrary system commands. Unlike other WebSocket endpoints (e.g., /ws) that correctly call validate_auth() for authentication, the /terminal/ws endpoint only checks the running mode and platform support before accepting connections, completely skipping authentication verification. This vulnerability is fixed in 0.23.0.
No analysis available yet.
Remediation
No remediation available yet.
Tracking
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Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-2679-6mx9-h9xc | Marimo: Pre-Auth Remote Code Execution via Terminal WebSocket Authentication Bypass |
References
History
Thu, 09 Apr 2026 19:15:00 +0000
| Type | Values Removed | Values Added |
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| Metrics |
ssvc
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Thu, 09 Apr 2026 17:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | marimo is a reactive Python notebook. Prior to 0.23.0, Marimo has a Pre-Auth RCE vulnerability. The terminal WebSocket endpoint /terminal/ws lacks authentication validation, allowing an unauthenticated attacker to obtain a full PTY shell and execute arbitrary system commands. Unlike other WebSocket endpoints (e.g., /ws) that correctly call validate_auth() for authentication, the /terminal/ws endpoint only checks the running mode and platform support before accepting connections, completely skipping authentication verification. This vulnerability is fixed in 0.23.0. | |
| Title | marimo Affected by Pre-Auth Remote Code Execution via Terminal WebSocket Authentication Bypass | |
| Weaknesses | CWE-306 | |
| References |
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| Metrics |
cvssV4_0
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Subscriptions
No data.
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-04-09T17:44:29.019Z
Reserved: 2026-04-08T00:01:47.629Z
Link: CVE-2026-39987
Updated: 2026-04-09T17:43:39.571Z
Status : Received
Published: 2026-04-09T18:17:02.807
Modified: 2026-04-09T18:17:02.807
Link: CVE-2026-39987
No data.
OpenCVE Enrichment
No data.
Weaknesses
Github GHSA