n8n has Arbitrary Command Execution via File Write and Git Operations
Critical8.5CVE-2026-27498 · Published Feb 25, 2026 · updated Feb 28, 2026
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| n8n npm | < 1.123.8 | 1.123.8 |
| >= 2.0.0, < 2.2.0 | 2.2.0 |
Details and references
## Impact An authenticated user with permission to create or modify workflows could chain the Read/Write Files from Disk node with git operations to achieve remote code execution. By writing to specific configuration files and then triggering a git operation, the attacker could execute arbitrary shell commands on the n8n host. ## Patches The issue has been fixed in n8n versions 2.2.0 and 1.123.8. Users should upgrade to one of these versions or later to remediate the vulnerability. ## 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 Read/Write Files from Disk node by adding `n8n-nodes-base.readWriteFile` to the `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-94
- Also known as
- CVE-2026-27498
- github.com/n8n-io/n8n/security/advisories/GHSA-x2mw-7j39-93xq
- nvd.nist.gov/vuln/detail/CVE-2026-27498
- github.com/n8n-io/n8n/commit/97365caf253978ba8e46d7bc53fa7ac3b6f67b32
- github.com/n8n-io/n8n/commit/e22acaab3dcb2004e5fe0bf9ef2db975bde61866
- github.com/n8n-io/n8n
- github.com/n8n-io/n8n/releases/tag/n8n@1.123.8
- github.com/n8n-io/n8n/releases/tag/n8n@2.2.0
More n8n advisories
All n8n| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Feb 25 | n8n has Unauthenticated Expression Evaluation via Form Node CVE-2026-27493Critical9.0fixed in 1.123.22, 2.9.3, 2.10.1 | Critical9.0 | 1.123.22, 2.9.3, 2.10.1 |
| Feb 25 | n8n has Arbitrary File Read via Python Code Node Sandbox Escape CVE-2026-27494High9.9fixed in 1.123.22, 2.9.3, 2.10.1 | High9.9 | 1.123.22, 2.9.3, 2.10.1 |
| Feb 25 | n8n has a Sandbox Escape in its JavaScript Task Runner CVE-2026-27495Criticalfixed in 1.123.22, 2.9.3, 2.10.1 | Critical | 1.123.22, 2.9.3, 2.10.1 |
| Feb 25 | n8n has Potential Remote Code Execution via Merge Node CVE-2026-27497Critical9.9fixed in 1.123.22, 2.9.3, 2.10.1 | Critical9.9 | 1.123.22, 2.9.3, 2.10.1 |
| Feb 25 | n8n: Expression Sandbox Escape Leads to RCE CVE-2026-27577Critical9.9fixed in 1.123.22, 2.9.3, 2.10.1 | Critical9.9 | 1.123.22, 2.9.3, 2.10.1 |
| Feb 25 | n8n Vulnerable to Stored XSS via Various Nodes CVE-2026-27578High5.4fixed in 1.123.22, 2.9.3, 2.10.1 | High5.4 | 1.123.22, 2.9.3, 2.10.1 |