Medium severity · published Oct 1, 2026
CVE-2026-103254
n8n before 1.123.80, 2.39.6, and 2.40.1 Path Traversal via Resume URL Generation
6.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 20% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
N8
n8n · n8n-io
before 1.123.80; 2.0.0 before 2.39.6; 2.40.0 before 2.40.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-103254
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103254
vendor-advisory
https://github.com/n8n-io/n8n/security/advisories/GHSA-597w-c3jh-g8fg
third-party-advisory
https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-path-traversal-via-resume-url-generation
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