CVE-2026-25049: n8n Has an Expression Escape Vulnerability Leading to RCE
Impact
Additional exploits in the expression evaluation of n8n have been identified and patched following CVE-2025-68613.
An authenticated user with permission to create or modify workflows could abuse crafted expressions in workflow parameters to trigger unintended system command execution on the host running n8n.
Patches
The issue has been fixed in n8n versions 1.123.17 and 2.5.2. Users should upgrade to these versions or later to remediate the vulnerability.
Workarounds
If upgrading is not immediately possible, administrators should consider the following temporary mitigations:
- Limit workflow creation and editing permissions to fully trusted users only. - Deploy n8n in a hardened environment with restricted operating system privileges and network access to reduce the impact of potential exploitation.
These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
Resources
- Best practices for securing n8n - Initial vulnerability advisory: CVE-2025-68613
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n8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backward compatibility.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Other sources
n8n is an open source workflow automation platform. Prior to versions 1.123.17 and 2.5.2, an authenticated user with permission to create or modify workflows could abuse crafted expressions in workflow parameters to trigger unintended system command execution on the host running n8n. This issue has been patched in versions 1.123.17 and 2.5.2.
— MITRE
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2026-25049?
CVE-2026-25049 has been identified as a critical vulnerability that can lead to remote code execution.
How do I fix CVE-2026-25049?
To mitigate CVE-2026-25049, upgrade to n8n versions 2.5.2 or 1.123.17.
Who is affected by CVE-2026-25049?
CVE-2026-25049 affects authenticated users of n8n versions below 1.123.17 and between 2.0.0 and 2.5.2.
What kind of vulnerability is CVE-2026-25049?
CVE-2026-25049 is an expression escape vulnerability that can be exploited for remote code execution.
Is there a patch available for CVE-2026-25049?
Yes, patches for CVE-2026-25049 are included in the updated n8n versions 2.5.2 and 1.123.17.