Description
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, the /chat WebSocket endpoint used by the Chat Trigger node's Hosted Chat feature did not verify that an incoming connection was authorized to interact with the target execution. An unauthenticated remote attacker who could identify a valid execution ID for a workflow in a waiting state could attach to that execution, receive the pending prompt intended for the legitimate user, and submit arbitrary input to resume or influence downstream workflow behavior. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| n8n-io | n8n | < 1.123.32, >= 2.17.0, < 2.17.4, >= 2.18.0, < 2.18.1 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 1 repository
-
rudSarkar/CVE-2026-42228 ★ 0 · May 7, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | n8n | < 1.123.32 | 1.123.32 | GHSA-f77h-j2v7-g6mw |
| npm | n8n | >= 2.18.0, < 2.18.1 | 2.18.1 | GHSA-f77h-j2v7-g6mw |
| npm | n8n | >= 2.0.0, < 2.17.4 | 2.17.4 | GHSA-f77h-j2v7-g6mw |
Advisories 1
- WID-SEC-2026-1251 n8n: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 24, 2026