All vulnerabilities
CVE-2026-103255GHSA-rqch-9jrh-cr8w

n8n before 1.123.80, 2.39.6, and 2.40.1 Path Traversal and Query Injection via Supabase

n8n-io n8nFrameworks
Open in ThreatlineRecord JSON
CVSS
7.1High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.30%Chance of exploitation activity in the next 30 days, higher than 21% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in1.123.80Also 2.39.6, 2.40.1CVE List
Published1 Oct 2026Updated 1 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 3

  • n8naffected: all versions before 1.123.80CVE List
  • n8naffected: 2.0.0 before 2.39.6CVE List
  • n8naffected: 2.40.0 before 2.40.1CVE List

References 2