n8n Vulnerable to Arbitrary File Write on Remote Systems via SSH Node
HighCVE-2026-25055 · Published Feb 4, 2026
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| n8n npm | >= 2.0.0, < 2.4.0 | 2.4.0 |
| < 1.123.12 | 1.123.12 |
Details and references
## Impact When workflows process uploaded files and transfer them to remote servers via the SSH node without validating their metadata the vulnerability can lead to files being written to unintended locations on those remote systems potentially leading to remote code execution on those systems. As a prerequisites an unauthenticated attacker needs knowledge of such workflows existing and the endpoints for file uploads need to be unauthenticated. ## Patches The issue has been fixed in n8n version 2.4.0 and 1.123.12. Users should upgrade to this version or later to remediate the vulnerability. ## Workarounds If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Disable or restrict access to workflows that accept file uploads via webhooks and transfer them via SSH. - Enable webhook authentication on all endpoints that handle file uploads. - Review usage of SSH credentials and consider rotating SSH credentials if in doubt. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures. ## Resources - [n8n Documentation , Blocking nodes](https://docs.n8n.io/hosting/securing/blocking-nodes/) , how to globally disable specific nodes --- n8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backwards compatibility. CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-22
- Also known as
- CVE-2026-25055
More n8n advisories
All n8n| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Feb 4 | n8n's Unsafe Buffer Allocation Allows In-Process Memory Disclosure in Task Runner CVE-2025-61917High7.7fixed in 1.114.3 | High7.7 | 1.114.3 |
| Feb 4 | n8n Vulnerable to Command Injection in Community Package Installation CVE-2026-21893Criticalfixed in 1.120.3 | Critical | 1.120.3 |
| Feb 4 | n8n Has Expression Escape Vulnerability Leading to RCE CVE-2026-25049Criticalfixed in 1.123.17, 2.5.2 | Critical | 1.123.17, 2.5.2 |
| Feb 4 | n8n's Improper CSP Enforcement in Webhook Responses May Allow Stored XSS CVE-2026-25051Highfixed in 1.122.5, 1.123.2 | High | 1.122.5, 1.123.2 |
| Feb 4 | n8n's Improper File Access Controls Allow Arbitrary File Read by Authenticated Users CVE-2026-25052Criticalfixed in 1.123.18, 2.5.0 | Critical | 1.123.18, 2.5.0 |
| Feb 4 | n8n has OS Command Injection in Git Node CVE-2026-25053Criticalfixed in 1.123.10, 2.5.0 | Critical | 1.123.10, 2.5.0 |