n8n: HTTP Request Node Pagination Prototype Pollution to RCE
Critical9.9CVE-2026-44789 · Published May 14, 2026 · updated Jul 20, 2026
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| n8n npm | < 1.123.43 | 1.123.43 |
| >= 2.21.0, < 2.22.1 | 2.22.1 | |
| >= 2.0.0-rc.0, < 2.20.7 | 2.20.7 |
Details and references
## Impact An authenticated user with permission to create or modify workflows could achieve global prototype pollution via an unvalidated pagination parameter in the HTTP Request node. Combined with other techniques this could lead to RCE on the instance. ## Patches The issue has been fixed in n8n versions 1.123.43, 2.20.7, and 2.22.1. 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 HTTP Request node by adding `n8n-nodes-base.httpRequest` to the `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures. --- 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:L/UI:N/S:C/C:H/I:H/A:H
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-1321
- Also known as
- CVE-2026-44789
More n8n advisories
All n8n| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| May 14 | n8n Has an Arbitrary File Read via Git Node CVE-2026-44790Critical8.8fixed in 1.123.43, 2.20.7, 2.22.1 | Critical8.8 | 1.123.43, 2.20.7, 2.22.1 |
| May 14 | n8n Has an XML Node Prototype Pollution Patch Bypass CVE-2026-44791Critical9.9fixed in 1.123.43, 2.20.7, 2.22.1 | Critical9.9 | 1.123.43, 2.20.7, 2.22.1 |
| May 14 | n8n Has a Source Control Pull SQL Injection CVE-2026-44792High9.0fixed in 1.123.43, 2.20.7, 2.21.1 | High9.0 | 1.123.43, 2.20.7, 2.21.1 |
| May 14 | n8n Has a Cross-user Authorization Bypass in Dynamic Credential OAuth Endpoints CVE-2026-45732High8.1fixed in 1.123.43, 2.20.7, 2.21.1 | High8.1 | 1.123.43, 2.20.7, 2.21.1 |
| May 19 | n8n: Legacy ExecuteWorkflow Node Bypassed File Path Restrictions CVE-2026-56352Medium6.4fixed in 2.19.3 | Medium6.4 | 2.19.3 |
| May 19 | n8n: Credential exfiltration via Allowed HTTP Request Domains Bypass CVE-2026-56348Medium9.1fixed in 2.20.0 | Medium9.1 | 2.20.0 |