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    CVE-2026-77073

    n8n versions before 2.34.1 contain a credential validation bypass in the MCP create_workflow_from_code tool when authentication type is set to an expression. Attackers with a valid MCP Bearer API key and knowledge of a target credential ID can persist unauthorized cross-project credential references on workflows in different projects.

    Published:Aug 20, 2026
    Last Modified:Sep 1, 2026
    EPS:Aug 20, 2026
    EPSS Score:0.00296
    CVSS Score:4.3

    Affected Products

    Vendor
    N8n
    Product
    N8n

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-86995 (CVSS 5.3) — n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the Git node valida…
    CVE-2026-86996 (CVSS 5.3) — n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.2, the workflow setting named Thi…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High