RCE in N8n
CVE-2026-27577
n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, 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. The issues have been fixed in n8n versions 2.10.1, 2.9.3, and 1.123.22. Users should upgrade to one of these versions or later to remediate all known vulnerabilities. If upgrading is not immediately possible, administrators should consider the following temporary mitigations. Limit workflow creation and editing permissions to fully trusted users only, and/or 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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.010 (61.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.100 · newest: 0.010 · change: -0.090
Affected products
- N8n
- N8n-Io N8n — versions < 1.123.22, >= 2.0.0, < 2.9.3, >= 2.10.0, < 2.10.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/n8n-io/n8n/security/advisories/GHSA-vpcf-gvg4-6qwr (Mitigation, Vendor Advisory)
- github.com/n8n-io/n8n/security/advisories/GHSA-v98v-ff95-f3cp (Not Applicable)
- github.com/n8n-io/n8n/commit/1479aab2d32fe0ee087f82b9038b1035c98be2f6 (Patch)
- github.com/n8n-io/n8n/commit/9e5212ecbc5d2d4e6f340b636a5e84be6369882e (Patch)
- docs.n8n.io/hosting/securing/overview (Not Applicable)
Frequently asked questions
- What is CVE-2026-27577?
- CVE-2026-27577 is a critical-severity vulnerability in N8n, classified under Code Injection. CVSS score: 9.9/10. Published 2026-02-25.
- How severe is CVE-2026-27577?
- Critical severity. CVSS v3 base score is 9.9 out of 10.
- Is CVE-2026-27577 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.