Improper access control in n8n - #VU137157
Published: July 8, 2026
Vulnerability identifier: #VU137157
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: n8n
Affected software:
n8n
n8n
Detailed vulnerability description
The vulnerability allows a remote user to escalate privileges.
The vulnerability exists due to improper access control in the AI Agents node-execution tool when chatting with an agent that has node tools enabled. A remote user can chat with a crafted agent to escalate privileges.
On affected instances, the issue can expose credential secrets from the project, and if command- or file-capable tool nodes are enabled, exploitation may be extended to arbitrary command execution on the host.
Remediation
Install security update from vendor's website.