CVE-2026-72771

high

Description

n8n versions before 2.32.1 fail to enforce the Allowed HTTP Request Domains allowlist in multiple AI and LLM nodes when user-supplied base or endpoint URLs are configured. Low-privileged workflow editors with use-only access to shared credentials can redirect requests to attacker-controlled hosts and exfiltrate credential secrets for reuse against underlying services.

References

Advisories

https://www.vulncheck.com/advisories/n8n-before-credential-restriction-bypass-via-ai-llm-nodes

https://github.com/n8n-io/n8n/security/advisories/GHSA-64xh-79j6-r5v8

Details

Source: Mitre, NVD

Published: 2026-08-11

Updated: 2026-08-28

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Severity: Medium

CVSS v4

Base Score: 7.1

Vector: 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: High

EPSS

EPSS: 0.00215