CVE-2026-110848 (GCVE-0-2026-110848)

Vulnerability from cvelistv5 – Published: 2026-10-14 22:52 – Updated: 2026-10-14 22:52
VLAI
Title
n8n before 1.123.83, 2.41.4, and 2.42.1 Prototype Pollution via AI Workflow Builder Connection Merge
Summary
n8n before 1.123.83, 2.x before 2.41.4, and 2.42.x before 2.42.1 contains a prototype pollution vulnerability in the AI workflow builder, which merges workflow connections using node names as object members without checking for reserved keys. Authenticated users can create nodes named __proto__ through the API and invoke the connect-nodes operation to pollute the global object prototype, disrupting the instance until restart.
Severity
6 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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 6106 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
n8n-io n8n Affected: 0 , < 1.123.83 (semver)
Affected: 2.0.0 , < 2.41.4 (semver)
Affected: 2.42.0 , < 2.42.1 (semver)
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-30 00:00
Credits
vonypeto
Show details on NVD website
To clipboard 

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