CVE-2026-103249CWE-79cross-site-scripting

CVE-2026-103249

High · published October 1, 2026

CVSS v3.1
7.6
EPSS
0%
Percentile
10.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
CVSS v4.0
6.9 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N
EPSS
0.00212 · 10.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-01T15:17Z
References (2)
https://github.com/n8n-io/n8n/security/advisories/GHSA-c2wp-6fgc-xjq4 · [email protected]https://www.vulncheck.com/advisories/n8n-before-1.123.80-2.39.6-and-2.40.1-stored-dom-xss-via-resource-locator · [email protected]
EPSS history
Timeline
  • 03 OCT 03:41Z
    EPSS moved — → 0%
    epss
  • 01 OCT 10:41Z
    n8n before 1.123.80, 2.39.6, and 2.40.1 Stored DOM XSS via Resource Locator
    cvelistv5