CVE-2026-86074Network attack vector

Credential exfiltration via unvalidated cross-origin probe URL

Published Sep 8, 2026 · Updated Sep 9, 2026

SSRF in n8n before 2.37.7 and 2.38.0 through 2.38.1 allows remote attackers to send authenticated requests to unintended origins. The Instance AI credential setup flow accepts a fetched test or verification URL without confirming that its origin matches the workflow node. Exploitation requires a user to inject attacker-controlled fetched content; resulting requests can disclose configured third-party credentials and probe other origins.

CVSS severity5.9
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in n8n before 2.37.7 and 2.38.0 through 2.38.1 allows remote attackers to send authenticated requests to unintended origins. The Instance AI credential setup flow accepts a fetched test or verification URL without confirming that its origin matches the workflow node. Exploitation requires a user to inject attacker-controlled fetched content; resulting requests can disclose configured third-party credentials and probe other origins.

The record

CVE
CVE-2026-86074
Published
Sep 8, 2026
Updated
Sep 9, 2026
Vendor
n8n
Product
n8n
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 8, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 9, 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=< 2.37.7
  2. Affected versionversion=>= 2.38.0, < 2.38.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

n8n · n8nversion=< 2.37.7; version=>= 2.38.0, < 2.38.2

Published CVSS scores

5.9n8nCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:N/VA:N/SC:L/SI:L/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

No sourced classifications are available.

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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