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Critical· 9.4official fix available

CVE-2026-27577

n8n, an open‑source workflow automation tool, has a critical flaw that lets an authenticated user run arbitrary system commands by crafting expressions in a workflow. The bug was fixed in versions 2.10.1, 2.9.3, and 1.123.22. Users should update to a patched release or apply temporary controls.

publishedFeb 25, 2026
last modifiedJul 28, 2026
sourcesNVD
severity · cvss
9.4
critical · how bad it is
exploitation · epss
9%
95th percentile · chance of exploitation in 30 days
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
auto-deletes from the system
counting…on Aug 27, 2026

An official fix is available, so this entry is kept for 30 days and then removed automatically.

01

Who is affected

All installations of n8n older than 2.10.1, 2.9.3, or 1.123.22, especially those that allow users to create or edit workflows. Typical users are developers and system administrators running n8n on their own servers.

02

Real-world impact

An attacker who can create or edit a workflow can execute any command on the machine that runs n8n, potentially taking full control of the server.

03

Why this severity

The CVSS score of 9.4 reflects the vulnerability’s high impact (execution of arbitrary code), low attack complexity, and the fact that it requires only authenticated access with workflow‑editing rights. Because the attacker can gain complete system control, the score is near the maximum.

04

What to do about it

official fix available
recommended steps
  1. 01Upgrade n8n to version 2.10.1 or later, or to 2.9.3 or later, or to 1.123.22 or later.
interim mitigations
  • ›Restrict 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.

NVD-referenced vendor advisory

05

Timeline

  1. Feb 25, 2026 · Feb 25, 2026
    Published
    Disclosed and added to the National Vulnerability Database.
  2. Jul 28, 2026 · 8d ago
    Advisory updated
    The NVD record was last revised.
  3. Jul 28, 2026 · 8d ago
    Official fix available
    A vendor patch or mitigation now exists — see the remediation steps above.
06

How it’s attacked

Attack vectorNetwork (remote)
Attack complexityLow
Attack requirementsNone
Privileges requiredLow
User interactionNone needed
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
07

References & advisories

NVD advisory ↗Search advisories ↗
(ai-assisted) A model wrote this summary from the official data, so double-check it against the source before you act on it. Read the official advisory →
CVE-2026-27577: n8n, an open‑source workflow automation tool, has a critical flaw that · Vulnary