All vulnerabilities
CVE-2026-103249GHSA-c2wp-6fgc-xjq4

n8n before 1.123.80, 2.39.6, and 2.40.1 Stored DOM XSS via Resource Locator

n8n-io n8nFrameworks
Open in ThreatlineRecord JSON
CVSS
6.9Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.21%Chance of exploitation activity in the next 30 days, higher than 10% 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 stored DOM cross-site scripting vulnerability in Resource Locator parameter dropdown link handling. Workflow authors can inject malicious script URLs that execute arbitrary JavaScript in the editor origin when other users open the node dropdown and click the external-link icon, with the payload persisting across workflow imports and shares.

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