n8n is an open source workflow automation platform. Prior to versions 1.123.33 and 2.17.5, the dynamic-node-parameters endpoints did not verify whether the authenticated caller was authorized to use a supplied credential reference. An authenticated user with access to a shared workflow could supply a foreign credential ID in the request body, causing the backend to decrypt and use that credential in a helper execution path where the caller also controls the destination URL. This allowed the caller to force the backend to authenticate against attacker-controlled infrastructure using a credential belonging to another user, effectively exfiltrating a reusable API key. The issue is not limited to any single node type; any node that resolves credentials dynamically through these endpoints may be affected. This issue has been patched in versions 1.123.33, 2.17.5, and 2.18.0.
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History
Mon, 04 May 2026 20:30:00 +0000
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ssvc
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Mon, 04 May 2026 19:00:00 +0000
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| Description | n8n is an open source workflow automation platform. Prior to versions 1.123.33 and 2.17.5, the dynamic-node-parameters endpoints did not verify whether the authenticated caller was authorized to use a supplied credential reference. An authenticated user with access to a shared workflow could supply a foreign credential ID in the request body, causing the backend to decrypt and use that credential in a helper execution path where the caller also controls the destination URL. This allowed the caller to force the backend to authenticate against attacker-controlled infrastructure using a credential belonging to another user, effectively exfiltrating a reusable API key. The issue is not limited to any single node type; any node that resolves credentials dynamically through these endpoints may be affected. This issue has been patched in versions 1.123.33, 2.17.5, and 2.18.0. | |
| Title | n8n: Credential Authorization Bypass in dynamic-node-parameters Allows Foreign API Key Replay | |
| Weaknesses | CWE-862 | |
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| Metrics |
cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-04T19:41:52.763Z
Reserved: 2026-04-25T05:37:12.117Z
Link: CVE-2026-42226
Updated: 2026-05-04T19:41:49.371Z
Status : Received
Published: 2026-05-04T19:16:04.563
Modified: 2026-05-04T19:16:04.563
Link: CVE-2026-42226
No data.
OpenCVE Enrichment
Updated: 2026-05-04T20:30:08Z