CVE-2026-27494
published 2026-02-25CVE-2026-27494: 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…
PriorityP268critical9.9CVSS 3.1
AVNACLPRLUINSCCHIHAH
EPSS
0.35%
27.0th percentile
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 use the Python Code node to escape the sandbox. The sandbox did not sufficiently restrict access to certain built-in Python objects, allowing an attacker to exfiltrate file contents or achieve RCE. 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 this version 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 disable the Code node by adding `n8n-nodes-base.code` to the `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| n8n-io | n8n | < 1.123.22 | 1.123.22 |
| n8n-io | n8n | — | — |
| n8n-io | n8n | — | — |
| n8n | n8n | < 1.123.22 | 1.123.22 |
| n8n | n8n | >= 0 < 1.123.22 | 1.123.22 |
| n8n | n8n | >= 2.0.0 < 2.9.3 | 2.9.3 |
| n8n | n8n | >= 2.0.0 < 2.9.3 | 2.9.3 |
| n8n | n8n | >= 2.10.0 < 2.10.1 | 2.10.1 |
| n8n | n8n | >= 2.10.0 < 2.10.1 | 2.10.1 |
CVSS provenance
nvdv3.19.9CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
nvdv4.07.1HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/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
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OSV
n8n has Arbitrary File Read via Python Code Node Sandbox Escape
osv·2026-02-25
CVE-2026-27494 [HIGH] n8n has Arbitrary File Read via Python Code Node Sandbox Escape
n8n has Arbitrary File Read via Python Code Node Sandbox Escape
## Impact
An authenticated user with permission to create or modify workflows could use the Python Code node to escape the sandbox. The sandbox did not sufficiently restrict access to certain built-in Python objects, allowing an attacker to exfiltrate file contents or achieve RCE.
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`.
## Patches
The issue has been fixed in n8n versions 2.10.1, 2.9.3, and 1.123.22. Users should upgrade to this version or later to remediate t
GHSA
n8n has Arbitrary File Read via Python Code Node Sandbox Escape
ghsa·2026-02-25
CVE-2026-27494 [HIGH] CWE-497 n8n has Arbitrary File Read via Python Code Node Sandbox Escape
n8n has Arbitrary File Read via Python Code Node Sandbox Escape
## Impact
An authenticated user with permission to create or modify workflows could use the Python Code node to escape the sandbox. The sandbox did not sufficiently restrict access to certain built-in Python objects, allowing an attacker to exfiltrate file contents or achieve RCE.
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`.
## Patches
The issue has been fixed in n8n versions 2.10.1, 2.9.3, and 1.123.22. Users should upgrade to this version or later to remediate t
No detection rules found.
No public exploits indexed.
2026-02-25
Published