CVE-2026-85165Network attack vectorHinoki check available

Process-wide object mutation via unresolved free identifiers

Published Sep 3, 2026 · Updated Sep 3, 2026

Expression sandbox bypass in n8n before 2.36.2 allows remote authenticated users to mutate process-wide host objects through workflows. The expression rewriter leaves free identifiers in spread, computed-key, switch-case, and class-extension positions unresolved, causing them to bind to process globals. Workflow-edit permission is required, and each shared-object mutation affects later expression evaluations across the process until restart.

CVSS severity7.2
High
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Expression sandbox bypass in n8n before 2.36.2 allows remote authenticated users to mutate process-wide host objects through workflows. The expression rewriter leaves free identifiers in spread, computed-key, switch-case, and class-extension positions unresolved, causing them to bind to process globals. Workflow-edit permission is required, and each shared-object mutation affects later expression evaluations across the process until restart.

The record

CVE
CVE-2026-85165
Published
Sep 3, 2026
Updated
Sep 3, 2026
Vendor
n8n
Product
n8n
Classifications
T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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 <2.35.4
  2. Affected versionversion=0 <2.36.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

n8n · n8nversion=0 <2.35.4; version=0 <2.36.2

Published CVSS scores

7.2n8nCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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