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CVE-2026-27495

N8n remote code execution

9.9 CRITICALEPSS 0.82%
  1. Published25 Feb 2026

Description

n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, an authenticated user with permission to create or modify workflows could exploit a vulnerability in the JavaScript Task Runner sandbox to execute arbitrary code outside the sandbox boundary. On instances using internal Task Runners (default runner mode), this could result in full compromise of the n8n host. On instances using external Task Runners, the attacker might gain access to or impact other task executed on the Task Runner. Task Runners must be enabled using `N8N_RUNNERS_ENABLED=true`. The issue has 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 the vulnerability. 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 use external runner mode (`N8N_RUNNERS_MODE=external`) to limit the blast radius. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

N8n≥ 2.0.0 < 2.9.3 · ≥ 2.10.0 < 2.10.1 · < 1.123.22

Remediation

Fixed in
N8n≥ 2.9.3

References

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Frequently asked

Is CVE-2026-27495 being actively exploited?

CVE-2026-27495 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.82%.

How severe is CVE-2026-27495?

CVE-2026-27495 has a CVSS 3.1 base score of 9.9, rated critical. EPSS estimates a 0.82% probability of exploitation.

Which products are affected by CVE-2026-27495?

Affected products include N8n.

How do I fix CVE-2026-27495?

Upgrade affected software to a fixed version, for example N8n 2.9.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-27495 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.