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    CVE-2026-118679

    n8n before 1.123.83, 2.41.4, and 2.42.1 contains a server-side request forgery vulnerability in the Slack Trigger webhook that allows unauthenticated attackers to exfiltrate Slack tokens by bypassing signature verification when no signing secret is set. Attackers who know the webhook URL can name a file to download, causing the node to send the workspace access token to an attacker host and return the response.

    Published:Oct 28, 2026
    Last Modified:Oct 28, 2026
    EPS:Oct 28, 2026
    EPSS Score:
    CVSS Score:7.5

    Affected Products

    Vendor
    N8n
    Product
    N8n

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-918 Server-Side Request Forgery

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    Related CVEs

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    CVE-2026-118648 (CVSS 8.4) — n8n before 1.123.85, 2.x before 2.43.5, and 2.44.x before 2.44.1 contains a stored cross-site scripting vulner…
    CVE-2026-118647 (CVSS 5.3) — n8n before 1.123.85, 2.x before 2.43.5, and 2.44.x before 2.44.1 saves the SeaTable Trigger node's API token i…
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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