GHSA-49m9-pgww-9vq6
High · 7.5CVSS
7.5
EPSS
—
Published
Apr 29, 2026
CISA due date
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The record
n8n Vulnerable to Unauthenticated Denial of Service via MCP Client Registration
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | n8n | 0 | 1.123.32 |
| npm | n8n | 2.0.0 | 2.17.4 |
| npm | n8n | 2.18.0 | 2.18.1 |
Related vulnerabilities
- CVE-2026-42236 n8n is an open source workflow automation platform. 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-2026-54301 n8n is an open source workflow automation platform. Also affects n8n