CVE-2026-72766Network attack vectorHinoki check available

Arbitrary file read and SSRF via type confusion

Published Aug 11, 2026 · Updated Aug 11, 2026

Type confusion in the n8n Send Email node allows remote attackers to read local files or trigger SSRF through crafted workflow input. The node passes non-string text or HTML body values from workflow expressions to Nodemailer, which interprets content objects as local paths or URLs. Exploitation requires an active workflow with an unauthenticated webhook, configured SMTP credentials, and untrusted input mapped directly into a body field; this configuration is not the default.

CVSS severity8.2
High
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Type confusion in the n8n Send Email node allows remote attackers to read local files or trigger SSRF through crafted workflow input. The node passes non-string text or HTML body values from workflow expressions to Nodemailer, which interprets content objects as local paths or URLs. Exploitation requires an active workflow with an unauthenticated webhook, configured SMTP credentials, and untrusted input mapped directly into a body field; this configuration is not the default.

The record

CVE
CVE-2026-72766
Published
Aug 11, 2026
Updated
Aug 11, 2026
Vendor
n8n
Product
n8n
Classifications
CWE-843, T1190
Attack vector
network
Privileges
unauthenticated

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 <1.123.67
  2. Affected versionversion=0 <2.31.5
  3. Affected versionversion=0 <2.32.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

n8n · n8nversion=0 <1.123.67; version=0 <2.31.5; version=0 <2.32.1

Published CVSS scores

8.2GitHub Security AdvisoryCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
T1190Exploit Public-Facing Application

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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