CVE-2026-42234
HighSummary
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an authenticated user with permission to create or modify workflows containing a Python Code Node could escape the sandbox and achieve arbitrary code execution on the task runner container.
Risk Assessment
This issue only affects instances where the Python Task Runner is enabled, posing a risk of unauthorized access to the system and potential damage to the organization's infrastructure.
Recommendation
It is recommended to upgrade to versions 1.123.32, 2.17.4, or 2.18.1 to mitigate this vulnerability and to disable the Python Task Runner if it is not necessary.
Other vulnerabilities in n8n workflow automation platform
See all- CVE-2026-54307Critical
In n8n before versions 1.123.55, 2.25.7, and 2.26.2, a member-level user with editor access to a shared workflow could reference credentials they do not own via specific public API endpoints. Credential ownership checks were only enforced partially leading to cross-user credential access.
- CVE-2026-44791Critical
n8n is an open source workflow automation platform. Prior to versions 1.123.43, 2.22.1, and 2.20.7, an authenticated user with permission to create or modify workflows could bypass the patch for CVE-2026-42232 in the XML node, potentially leading to RCE on the n8n host.
- CVE-2026-44789Critical
n8n is an open source workflow automation platform. Prior to versions 1.123.43, 2.22.1, and 2.20.7, an authenticated user with permission to create or modify workflows could achieve global prototype pollution via an unvalidated pagination parameter in the HTTP Request node.
- CVE-2026-54310Critical
n8n is an open source workflow automation platform. Prior to versions 2.25.7 and 2.26.2, an authenticated user with permission to create or modify workflows could supply crafted parameters to the TimescaleDB and/or legacy Postgres v1 node, allowing arbitrary SQL to be injected and executed against the connected database within the privileges of the configured database account.
- CVE-2026-44790High
n8n is an open source workflow automation platform. Prior to versions 1.123.43, 2.22.1, and 2.20.7, an authenticated user with permission to create or modify workflows could inject CLI flags on the Git node's Push operation, allowing an attacker to read arbitrary files from the n8n server potentially leading to full compromise.
- CVE-2026-54311High
n8n is an open source workflow automation platform. Prior to versions 2.25.7 and 2.26.2, an authenticated user with permission to create or modify workflows could pollute the sandbox used by the Merge node's SQL Query mode.
Original NVD description (English source)
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, an authenticated user with permission to create or modify workflows containing a Python Code Node could escape the sandbox and achieve arbitrary code execution on the task runner container. This issue only affects instances where the Python Task Runner is enabled. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.