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    1 vulnerability found for Flowise Components by Flowise

    CVE-2026-56274 (GCVE-0-2026-56274)

    Vulnerability from cvelistv5 – Published: 2026-06-23 12:13 – Updated: 2026-06-24 11:17
    VLAI
    Title
    Flowise - Remote Code Execution via MCP Security Bypass in validateCommandFlags and validateArgsForLocalFileAccess
    Summary
    Flowise before 3.1.2 contains multiple OS command injection vulnerabilities in the Custom MCP Server feature due to incomplete command-flag validation and a regex bypass in local file access restrictions. An attacker with a Flowise account of any role, or API access with view/update permissions for chatflows, can configure a malicious MCP server to bypass the validateCommandFlags blocklist (for example, 'docker build' is not blocked, and 'npx --yes' is not blocked while only '-y' is) and the validateArgsForLocalFileAccess checks, resulting in execution of arbitrary commands on the Flowise host.
    Severity
    8.7 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
    9.9 (Critical)
    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
    SSVC
    Exploitation: poc Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
    Assigner
    References
    Impacted products
    Vendor Product Version
    Flowise Flowise Affected: 0 , < 3.1.2 (semver)
    Unaffected: 3.1.2 (semver)
    		Create a notification for this product.
    Flowise Flowise Components Affected: 0 , < 3.1.2 (semver)
    Unaffected: 3.1.2 (semver)
    		Create a notification for this product.
    Date Public
    2026-05-14 00:00
    Credits
    cn-panda
    Show details on NVD website
    To clipboard 

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