Description
n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a path traversal vulnerability in the Supabase node where the tableId parameter is inserted into request paths without validation. Attackers can exploit workflows binding tableId to untrusted input to traverse to Auth and Storage APIs using the administrative serviceRole key, bypassing Row Level Security and enabling unauthorized data access and modification.
Published: 2026-10-01
Score: 7.1 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Thu, 01 Oct 2026 11:00:00 +0000

Type Values Removed Values Added
Description n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain a path traversal vulnerability in the Supabase node where the tableId parameter is inserted into request paths without validation. Attackers can exploit workflows binding tableId to untrusted input to traverse to Auth and Storage APIs using the administrative serviceRole key, bypassing Row Level Security and enabling unauthorized data access and modification.
Title n8n before 1.123.80, 2.39.6, and 2.40.1 Path Traversal and Query Injection via Supabase
First Time appeared N8n
N8n n8n
Weaknesses CWE-73
CPEs cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
Vendors & Products N8n
N8n n8n
References
Metrics cvssV3_1

{'score': 9, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}

cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:H/SA:H'}

Subscriptions

N8n N8n
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-01T10:42:00.052Z

Reserved: 2026-09-30T10:55:39.869Z

Link: CVE-2026-103255

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-01T11:17:19.717

Modified: 2026-10-01T11:17:19.860

Link: CVE-2026-103255

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-01T14:15:09Z

Weaknesses
  • CWE-73

    External Control of File Name or Path