CVE-2026-54301
Medium · 5.4CVSS
5.4
EPSS
0.2%
Published
Jun 23, 2026
CISA due date
—
The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | n8n | 0 | 1.123.55 |
| npm | n8n | 2.0.0-rc.0 | 2.25.7 |
| npm | n8n | 2.26.0 | 2.26.2 |
Related vulnerabilities
- GHSA-v733-mwr6-fgcm n8n: Same-Origin XSS in Respond to Webhook Node Same vulnerability
- CVE-2026-54308 n8n is an open source workflow automation platform. Also affects n8n
- CVE-2026-54307 n8n is an open source workflow automation platform. Also affects n8n
- CVE-2026-54304 n8n is an open source workflow automation platform. Also affects n8n
- CVE-2026-54305 n8n is an open source workflow automation platform. Also affects n8n
- CVE-2026-54306 n8n is an open source workflow automation platform. Also affects n8n
- CVE-2026-54302 n8n is an open source workflow automation platform. Also affects n8n
- CVE-2026-49465 n8n is an open source workflow automation platform. Also affects n8n