VDB
CVE-2026-54301
CVE-2026-54301
PUBLISHED
CVSS 7 HIGH
Reported by GitHub_M · Published June 23, 2026
n8n is an open source workflow automation platform. Prior to 1.123.55, 2.25.7, and 2.26.2, an authenticated user with workflow edit access could configure a Respond to Webhook node to serve binary content with an attacker-controlled Content-Type. The binary response path bypassed the central Content-Security-Policy sandbox header, allowing a public webhook to execute JavaScript in the n8n origin when visited by an authenticated user, with access to that user's session. This vulnerability is fixed in 1.123.55, 2.25.7, and 2.26.2.
Risk Scores
CVSS 4.0
7
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| n8n-io | n8n | < 1.123.55, >= 2.0.0-rc.0, < 2.25.7, >= 2.26.0, < 2.26.2 |
| n8n-io | n8n | < 1.123.55, >= 2.0.0-rc.0, < 2.25.7, >= 2.26.0, < 2.26.2 |
| npm | n8n | 0, 2.0.0-rc.0, 2.26.0 |
Timeline
- Jun 16, 2026 CVE Published
- Jun 24, 2026 EPSS Score
- Jun 24, 2026 Coalition ESS Score
- Jun 24, 2026 Security Advisory