Vulnerability · Published Oct 1, 2026 · Assigned by VulnCheck

CVE-2026-103254n8n before 1.123.80, 2.39.6, and 2.40.1 Path Traversal via Resume URL Generation

Medium 6.3

In plain English

A medium-severity path traversal in n8n from n8n-io. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium

Exploit odds (30 days)0.3%top 79.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 signed resume URL generation for Send-and-Wait approvals. Attackers with workflow creation permissions can mint valid approval URLs for gates in projects they cannot access by exploiting unresolved traversal sequences in caller-controlled node IDs, enabling cross-project approval forgery.

Affected products (as reported)

Vendor	Product	Versions
n8n-io	n8n	0 – before 1.123.802.0.0 – before 2.39.62.40.0 – before 2.40.1

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N

References

GitHub Security Advisory (GHSA-597w-c3jh-g8fg) vendor-advisory
VulnCheck Advisory: n8n before 1.123.80, 2.39.6, and 2.40.1 Path Traversal via Resume URL Generation third-party-advisory