Expression Evaluation Exploit in n8n Workflow Automation Platform
CVE-2026-27577

9.4CRITICAL

Key Information:

Vendor

N8n-io

Status
N8n
Vendor
CVE Published:
25 February 2026

What is CVE-2026-27577?

n8n, an open-source workflow automation platform, has a vulnerability that allows authenticated users to exploit crafted expressions within workflow parameters. This can lead to unintended system command execution on the host machine. Versions 2.10.1, 2.9.3, and 1.123.22 have addressed these issues following previous vulnerabilities. Users are strongly advised to upgrade to these versions or later. If an upgrade is not feasible immediately, limiting modification permissions to trusted users and deploying n8n in a secure environment with restricted OS privileges and network access are recommended as temporary mitigations. However, these measures do not eliminate the risk entirely and should only serve as short-term solutions.

Human OS v1.0:
Ageing Is an Unpatched Zero-Day Vulnerability.

Remediate biological technical debt. Prime Ageing uses 95% high-purity SIRT6 activation to maintain genomic integrity and bolster systemic resilience.

Deploy the Patch

Affected Version(s)

n8n < 1.123.22 < 1.123.22

n8n >= 2.0.0, < 2.9.3 < 2.0.0, 2.9.3

n8n >= 2.10.0, < 2.10.1 < 2.10.0, 2.10.1

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-vp...
x_refsource_CONFIRM
https://github.com/n8n-io/n8n/security/advisories/GHSA-v9...
x_refsource_MISC
https://github.com/n8n-io/n8n/commit/1479aab2d32fe0ee087f...
x_refsource_MISC

CVSS V4

Score:
9.4
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
.