What is the CVSS score of CVE-2026-25049?

CVE-2026-25049 has a CVSS 3.1 base score of 9.9 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2026-25049?

Yes, a public proof-of-concept exploit is available for CVE-2026-25049. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-25049?

Within 24 hours: Identify all N8N instances and their current versions; assess whether instances are internet-facing or accessible to untrusted networks. Within 7 days: Apply vendor patch to upgrade all N8N deployments to version 1.123.18 or later; coordinate with application owners to schedule maintenance windows with minimal business disruption. Within 30 days: Conduct post-patch validation testing; review N8N access logs for suspicious activity during the vulnerability window; implement network segmentation if not already in place to limit N8N exposure.

N8n CVE-2026-25049

Q: Which versions of N8n are affected by CVE-2026-25049?

N8N workflow automation platforms running versions 1.123.17 and earlier face critical risk of remote code execution through improper code resource handling.. A patch is available.

CRITICAL

Improper Control of Dynamically-Managed Code Resources (CWE-913)

2026-02-04 security-advisories@github.com

GHSA-6cqr-8cfr-67f8

RCE Command Injection Node.js Code Injection AI / ML N8n

9.9

CVSS 3.1 · GitHub Advisory

View

Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

Access

Authenticate as n8n user
Exploit

Create or modify workflow with crafted expression
Execution

Inject system command in workflow parameters
Impact

Execute arbitrary command on host

Vulnerability Assessment

Weakness	CWE CWE-913 OWASP Top 10:2025 A08:2025 - Software or Data Integrity Failures ASVS 5.0 V15 - Secure Coding and Architecture Dynamic code resource control
Exploitation Conditions	Authenticated user account with workflow creation/modification permissions on n8n instance prior to versions 1.123.17 or 2.5.2. No additional configuration required beyond standard n8n deployment with user roles enabled.
Impact	CVSS 9.9 with patch. n8n is a popular workflow automation platform. First of four critical n8n vulnerabilities in this advisory batch.
Exploit ScenarioDerived	An authenticated n8n user crafts a workflow that exploits the runtime behavior modification to execute arbitrary code on the n8n server, accessing all workflow data and connected service credentials.

Act Now Prioritize within 24-48h. Why: CRITICAL severity + public POC available.

Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 12, 2026

n8n workflow automation platform has an authenticated code execution vulnerability (CVSS 9.9) through improper runtime behavior modification, enabling server takeover.

Earlier versions of this analysis (1)

v1 Mar 12, 2026 - 21:54 CVSS 9.9

Runtime behavior modification in n8n enables authenticated RCE.

RemediationAI

Update n8n immediately. All four n8n vulnerabilities should be patched together.

Affected Packages

npm n8n fix: 1.123.17, 2.5.2

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in npm

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

n8n < 1.123.17 / 2.5.2 has a CWE-913 improper control of dynamically-managed code resources that allows authenticated users to modify runtime behavior and execute arbitrary code on the server.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

GitHub Advisory PRIMARY 9.9 CRITICAL

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Patch released

Feb 05, 2026 - 20:22 nvd

Patch available

CVE Published

Feb 04, 2026 - 17:16 nvd

CRITICAL 9.9

DescriptionGitHub Advisory

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.

Executive ViewAI

Why It Matters

N8N workflow automation platforms running versions 1.123.17 and earlier face critical risk of remote code execution through improper code resource handling. Any organization using N8N for business process automation is at immediate risk of unauthorized system access and data compromise, requiring urgent remediation before exploitation occurs.

Business Impact: Severe

Compensating Controls

Apply vendor patch. If immediate patching is not possible: restrict N8N network access to authorized users only via firewall/WAF rules; disable dynamic code execution features if available; implement continuous monitoring and logging of N8N activity for indicators of exploitation; consider taking affected instances offline until patching is complete.

Threat Intelligence Overview

EPSS Score

0.0%

Top 89% exploitable

Exploit

POC

Public exploit code exists

Data Quality

4 sources

Confidence: Medium

NVD

CVE.org

EPSS

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available Yes

Active threat No

Deciding rule

CRITICAL severity + public POC available

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Out-of-Cycle

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Human Impact

Very High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +50

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

OS Command Injection CRITICAL

OS command injection occurs when an application passes unsanitized user input directly into system shell commands.

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.