CVE-2026-72769 (GCVE-0-2026-72769)

Vulnerability from cvelistv5 – Published: 2026-08-11 12:17 – Updated: 2026-08-11 14:02
VLAI
Title
n8n before 1.123.67 Prototype Pollution via VM Expression Engine
Summary
n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in the main n8n process (a sandbox escape), leading to a denial of service. Both self-hosted and cloud instances running the VM expression engine are affected.
Severity
6.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-11 14:02 UTC
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6413 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
n8n-io n8n Affected: 0 , < 1.123.67 (semver)
Unaffected: 1.123.67 (semver)
guessed Create a notification for this product.
n8n-io n8n Affected: 0 , < 2.32.1 (semver)
Unaffected: 2.32.1 (semver)
guessed Create a notification for this product.
n8n-io n8n Affected: 0 , < 2.31.5 (semver)
Unaffected: 2.31.5 (semver)
guessed Create a notification for this product.
Date Public
2026-07-22 00:00
Show details on NVD website
To clipboard 

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