CVE-2026-86993Network attack vector

Cross-project credential disclosure via unchecked destination reference

Published Sep 8, 2026 · Updated Sep 9, 2026

Missing authorization in affected n8n versions allows remote authenticated users to disclose other projects' stored credential secrets. The Log Streaming credential resolver decrypts the generic HTTP credential ID named by a destination without checking the caller's project access. Exploitation requires a custom global role with Log Streaming scopes and sends the decrypted secret to an attacker-controlled endpoint.

CVSS severity5.9
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in affected n8n versions allows remote authenticated users to disclose other projects' stored credential secrets. The Log Streaming credential resolver decrypts the generic HTTP credential ID named by a destination without checking the caller's project access. Exploitation requires a custom global role with Log Streaming scopes and sends the decrypted secret to an attacker-controlled endpoint.

The record

CVE
CVE-2026-86993
Published
Sep 8, 2026
Updated
Sep 9, 2026
Vendor
n8n
Product
n8n
Classifications
CWE-862, T1555
Attack vector
network
Privileges
authenticated

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=< 1.123.76
  2. Affected versionversion=>= 2.0.0, < 2.37.7
  3. Affected versionversion=>= 2.38.0, < 2.38.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

n8n · n8nversion=< 1.123.76; version=>= 2.0.0, < 2.37.7; version=>= 2.38.0, < 2.38.2

Published CVSS scores

5.9GitHubCVSS:4.0/AV:N/AC:L/AT:P/PR:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1555Credentials from Password Stores

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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