CVE-2026-42236
1 advisory.
npm/n8n CVE-2026-42236: high 7.5, EPSS 0.65%
n8n Vulnerable to Unauthenticated Denial of Service via MCP Client Registration
Action: Upgrade n8n to 1.123.32 or later.
npm i n8n@1.123.32npm i n8n@2.18.1npm i n8n@2.17.4Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | 1.123.32 | - |
| 2.18.0 | 2.18.1 | - |
| 2.0.0 | 2.17.4 | - |
Fixed versions
| 1.123.32 | 2.18.1 | 2.17.4 |
Sources
- osv: GHSA-49m9-pgww-9vq6
- https://github.com/n8n-io/n8n/security/advisories/GHSA-49m9-pgww-9vq6
- https://nvd.nist.gov/vuln/detail/CVE-2026-42236
- https://github.com/n8n-io/n8n
CVE-2026-42236 · published · modified · JSON