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    2 vulnerabilities by marimo-team

    CVE-2026-54386 (GCVE-0-2026-54386)

    Vulnerability from cvelistv5 – Published: 2026-06-17 21:37 – Updated: 2026-06-18 13:54 X_Open Source
    VLAI
    Title
    marimo < 0.23.9 XSS via file Query Parameter in assets.py
    Summary
    marimo before 0.23.9 contains a reflected cross-site scripting vulnerability in the notebook page that allows unauthenticated attackers to inject arbitrary JavaScript by exploiting improper escaping of single quotes in the file query parameter reflected into an inline JavaScript string literal. Attackers can craft a malicious link with a payload beginning with __new__ to bypass the 404 check and inject JavaScript into the page, which executes without Content-Security-Policy restrictions in the origin of a victim's marimo server.
    Severity
    5.1 (Medium)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
    6.1 (Medium)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    SSVC
    Exploitation: none Automatable: no Technical Impact: partial
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
    Assigner
    References
    Impacted products
    Vendor Product Version
    marimo-team marimo Affected: 0 , < 0.23.9 (semver)
    		Create a notification for this product.
    Date Public
    2026-06-04 00:00
    Credits
    Elvin Suleymanov
    Show details on NVD website
    To clipboard 

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          "url": "https://github.com/marimo-team/marimo/pull/9789"
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    CVE-2026-39987 (GCVE-0-2026-39987)

    Vulnerability from cvelistv5 – Published: 2026-04-09 17:16 – Updated: 2026-04-24 03:55
    VLAI CISA KEV KEVintel KEV
    Title
    marimo Affected by Pre-Auth Remote Code Execution via Terminal WebSocket Authentication Bypass
    Summary
    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.
    Severity
    9.3 (Critical)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    SSVC
    Exploitation: active Automatable: yes Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-306 - Missing Authentication for Critical Function
    Assigner
    References
    Impacted products
    Vendor Product Version
    marimo-team marimo Affected: < 0.23.0
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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