CVE-2026-72768Network attack vectorHinoki check available

Authenticated internal-service disclosure via unprotected MCP requests

Published Aug 11, 2026 · Updated Aug 11, 2026

SSRF in the MCP Client node in n8n before 2.32.1 allows remote authenticated users to read responses from blocked internal hosts. The node sends requests to a user-supplied endpoint without configured SSRF routing or resolved-address pinning. Exploitation requires permission to create or edit workflows; successful requests expose services reachable from the n8n server.

CVSS severity6.4
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SSRF in the MCP Client node in n8n before 2.32.1 allows remote authenticated users to read responses from blocked internal hosts. The node sends requests to a user-supplied endpoint without configured SSRF routing or resolved-address pinning. Exploitation requires permission to create or edit workflows; successful requests expose services reachable from the n8n server.

The record

CVE
CVE-2026-72768
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
n8n
Product
n8n
Classifications
CWE-918
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.31.5
  2. Affected versionversion=0 <2.32.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

n8n · n8nversion=0 <2.31.5; version=0 <2.32.1

Published CVSS scores

6.4VulnCheckCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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