n8n: Bypass "Allowed HTTP Request Domains" Credential Restriction in Multiple AI and LLM Nodes
HighCVE-2026-72771 · Published Jul 22, 2026 · updated Aug 12, 2026
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| n8n npm | >= 2.32.0, < 2.32.1 | 2.32.1 |
| < 2.31.5 | 2.31.5 |
Details and references
## Impact The credential "Allowed HTTP Request Domains" allowlist was intended to restrict which hosts a credential's secret could be sent to, protecting shared credentials from users who could use but not view them. Several AI/LLM nodes did not enforce this allowlist when a user-supplied base or endpoint URL was set. A low-privileged workflow editor with use-only access to such a shared credential could point one of these nodes at an attacker-controlled host and cause the credential secret to be transmitted there, then reuse it against the underlying service. Only instances where a credential has "Allowed HTTP Request Domains" configured and is shared with non-owner users are affected. ## Patches The issue has been fixed in n8n versions 2.31.5 and 2.32.1. 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: - Restrict workflow creation and editing permissions to fully trusted users only. - Restrict credential sharing to fully trusted users only. - Audit credentials with domain restrictions for unexpected sharing relationships. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
- CVSS 4.0
- CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-863
- Also known as
- CVE-2026-72771
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