n8n is an open source workflow automation platform. Prior to versions 2.14.1, 2.13.3, and 1.123.27, an authenticated user with the `global:member` role could exploit chained authorization flaws in n8n's credential pipeline to steal plaintext secrets from generic HTTP credentials (`httpBasicAuth`, `httpHeaderAuth`, `httpQueryAuth`) belonging to other users on the same instance. The attack abuses a name-based credential resolution path that does not enforce ownership or project scope, combined with a bypass in the credentials permission checker that causes generic HTTP credential types to be skipped during pre-execution validation. Together, these flaws allow a member-role user to resolve another user's credential ID and execute a workflow that decrypts and uses that credential without authorization. Native integration credential types (e.g. `slackApi`, `openAiApi`, `postgres`) are not affected by this issue. This vulnerability affects Community Edition only. Enterprise Edition has additional permission gates on workflow creation and execution that independently block this attack chain. The issue has been fixed in n8n versions 1.123.27, 2.13.3, and 2.14.1. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations: Restrict instance access to fully trusted users only, and/or audit credentials stored on the instance and rotate any generic HTTP credentials (`httpBasicAuth`, `httpHeaderAuth`, `httpQueryAuth`) that may have been exposed. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - n8n is an open source workflow automation platform. Prior to versions 2.14.1, 2.13.3, and 1.123.27, an
    authenticated user with the `global:member` role could exploit chained authorization flaws in n8n's
    credential pipeline to steal plaintext secrets from generic HTTP credentials (`httpBasicAuth`,
    `httpHeaderAuth`, `httpQueryAuth`) belonging to other users on the same instance. The attack abuses a
    name-based credential resolution path that does not enforce ownership or project scope, combined with a
    bypass in the credentials permission checker that causes generic HTTP credential types to be skipped
    during pre-execution validation. Together, these flaws allow a member-role user to resolve another user's
    credential ID and execute a workflow that decrypts and uses that credential without authorization. Native
    integration credential types (e.g. `slackApi`, `openAiApi`, `postgres`) are not affected by this issue.
    This vulnerability affects Community Edition only. Enterprise Edition has additional permission gates on
    workflow creation and execution that independently block this attack chain. The issue has been fixed in
    n8n versions 1.123.27, 2.13.3, and 2.14.1. Users should upgrade to one of these versions or later to
    remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the
    following temporary mitigations: Restrict instance access to fully trusted users only, and/or audit
    credentials stored on the instance and rotate any generic HTTP credentials (`httpBasicAuth`,
    `httpHeaderAuth`, `httpQueryAuth`) that may have been exposed. These workarounds do not fully remediate
    the risk and should only be used as short-term mitigation measures. (CVE-2026-33663)

ID	Name	Product	Family	Type	Severity
439237	SCA: security update for n8n (GHSA-m63j-689w-3j35)	Tenable Cloud Security	SCA Checks	Local	high
439237	SCA: security update for n8n (GHSA-m63j-689w-3j35)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-33663

high

Tenable Plugins

high

high