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Advisories

n8n - Disk Space Exhaustion via Data-Table File Upload Endpoint

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severity
medium
date
Affecting

  • n8n >= 0, < 2.28.0

  • n8n >= 0, < 1.123.58

CWE
  • CWE-770 Allocation of Resources Without Limits or Throttling
CVSS
5.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Credit
CodeByMoriarty
Description
n8n before 2.28.0 (and before 1.123.58 on the 1.x branch) contains a disk space exhaustion vulnerability in the data-table file upload endpoint. The per-request quota check does not account for files already written to the shared temporary directory, allowing an authenticated user to repeatedly upload files that accumulate on disk until the periodic cleanup runs, potentially exhausting available disk space on the host.

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