CVE-2026-42228
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
n8nnpm | < 1.123.32 | 1.123.32 |
n8nnpm | >= 2.18.0, < 2.18.1 | 2.18.1 |
n8nnpm | >= 2.0.0, < 2.17.4 | 2.17.4 |
Affected products
2Patches
Vulnerability mechanics
References
3- github.com/advisories/GHSA-f77h-j2v7-g6mwghsaADVISORY
- github.com/n8n-io/n8n/security/advisories/GHSA-f77h-j2v7-g6mwnvdVendor AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-42228ghsaADVISORY
News mentions
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