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mediumCVSS 6.5NVD status: Analyzed

CVE-2026-42228

n8n is an open source workflow automation platform.

Componentn8n
Severitymedium (CVSS 6.5)
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Published (NVD)2026-05-04
Last modified2026-06-17
Affected versions
n8n < 1.123.32
n8n >= 2.17.0, < 2.17.4
n8n = 2.18.0
Fixed in1.123.32, 2.17.4
WeaknessCWE-862
CISA KEVnot listed

NVD 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.

Does CVE-2026-42228 hit the version you run?Paste your docker-compose.yml, requirements.txt or package.json. The scanner checks your pinned versions against this CVE and every other one we track for n8n.
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What to do

  • Upgrade n8n to 1.123.32 or later (or the patched release of your branch: 2.17.4).
  • Do not expose the component's API or UI to the internet without authentication in front of it.

Sources

Read more

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