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CVE

CVE-2026-27497

n8n has Potential Remote Code Execution via Merge Node
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CVE

CVE-2026-27497

n8n has Potential Remote Code Execution via Merge Node

Impact

An authenticated user with permission to create or modify workflows could leverage the Merge node's SQL query mode to execute arbitrary code and write arbitrary files on the n8n server.

Patches

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.

Workarounds

If upgrading is not immediately possible, administrators should consider the following temporary mitigations:

  • Limit workflow creation and editing permissions to fully trusted users only.
  • Disable the Merge node by adding n8n-nodes-base.merge to the NODES_EXCLUDE environment variable.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.4
-
4.0
CVSS: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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
C
H
U
9.4
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Related Resources

No items found.

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-wxx7-mcgf-j869, https://nvd.nist.gov/vuln/detail/CVE-2026-27497, https://github.com/n8n-io/n8n, https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.22, https://github.com/n8n-io/n8n/releases/tag/n8n@2.10.1, https://github.com/n8n-io/n8n/releases/tag/n8n@2.9.3

Severity

9.9

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
9.9
EPSS Probability
0.00055%
EPSS Percentile
0.17124%
Introduced Version
0,1.83.0,2.0.0,2.10.0,1.49.0
Fix Available
1.123.22,1.121.15,2.9.1,2.10.1

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