GHSA-vhf8-cg2h-cg3p

Source

https://github.com/advisories/GHSA-vhf8-cg2h-cg3p

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-vhf8-cg2h-cg3p/GHSA-vhf8-cg2h-cg3p.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-vhf8-cg2h-cg3p

Aliases

CVE-2026-72768

Downstream

MINI-28f3-q2h3-7787

Published

2026-07-22T22:07:04Z

Modified

2026-08-12T04:26:18Z

Severity

6.4 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:L CVSS Calculator

Summary

n8n: SSRF Protection Bypass via MCP Client Node

Details

Impact

On an n8n instance with SSRF protection enabled, the MCP Client node sent requests to a user-supplied endpoint without routing them through that protection and without pinning the resolved address. An authenticated user who could create or edit a workflow could therefore cause the server to connect to internal or otherwise blocked hosts and read the responses back through the workflow, exposing internal services the SSRF protection was meant to protect.

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 n8n instance access to fully trusted users only.
Disable the MCP Client node by adding it to the NODES_EXCLUDE environment variable.
Restrict network egress from the n8n host to block access to internal and link-local address ranges at the network level.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Database specific

{
    "cwe_ids":  [
        "CWE-918"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-07-22T22:07:04Z",
    "nvd_published_at":  null,
    "severity":  "MODERATE"
}

References

Affected packages

npm / n8n

Package

Name: n8n; View open source insights on deps.dev
Purl: pkg:npm/n8n

Affected ranges

Type: SEMVER
Events: Introduced

2.32.0

Fixed

2.32.1

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-vhf8-cg2h-cg3p/GHSA-vhf8-cg2h-cg3p.json"

npm / n8n

Package

Name: n8n; View open source insights on deps.dev
Purl: pkg:npm/n8n

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

2.31.5

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-vhf8-cg2h-cg3p/GHSA-vhf8-cg2h-cg3p.json"