CVE-2026-103254

n8n before 1.123.80, 2.39.6, and 2.40.1 Path Traversal via Resume URL Generation

State: Published
Severity: 7.0 High
Published: Oct 1, 2026
Updated: Oct 6, 2026
Reserved: Sep 30, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	7.0 High	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N	VulnCheck
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N	VulnCheck

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected Products

Product	Versions
n8nn8n-io	before 1.123.80Affected 2.0.0 to before 2.39.6Affected 2.40.0 to before 2.40.1Affected

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 Generationthird-party-advisory

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