VulnerabilityAnalyzed

CVE-2026-27577

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.

CRITICAL 9.4EPSS 9.98%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (9.98%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

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.

CVSS 4.0: 9.4 CRITICALCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 9.98% probability · 95th percentile
CISA KEV: Not listed
Weakness: CWE-94
Affected: n8n/n8n
Source: security-advisories@github.com

References

https://docs.n8n.io/hosting/securing/overviewNot Applicable
https://github.com/n8n-io/n8n/commit/1479aab2d32fe0ee087f82b9038b1035c98be2f6Patch
https://github.com/n8n-io/n8n/commit/9e5212ecbc5d2d4e6f340b636a5e84be6369882ePatch
https://github.com/n8n-io/n8n/security/advisories/GHSA-v98v-ff95-f3cpNot Applicable
https://github.com/n8n-io/n8n/security/advisories/GHSA-vpcf-gvg4-6qwrMitigation, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.