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Advisories

n8n before 2.43.5 and 2.44.1 Authorization Bypass via Crafted Workflow ID in Data Tables

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Severity
high
Date
Affecting

  • n8n >= 2.44.0, < 2.44.1

  • n8n >= 0, < 2.43.5

CWE
  • CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Credit
momenashrafff
Description
n8n before 2.43.5 and 2.44.x before 2.44.1 accepts a client-supplied workflow ID and caches each workflow's owner project in memory by that ID, so a crafted ID such as __proto__ makes the Data Table project check match every project. An authenticated member who can create and run workflows can list, read, modify, and delete Data Table rows in all projects of the instance.

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