CVE-2026-56357 (GCVE-0-2026-56357)
Vulnerability from cvelistv5
Published
2026-06-22 21:04
Modified
2026-06-23 14:25
Severity ?
6.3 (Medium) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:L/SA:N
4.0 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Summary
n8n before 1.123.15 and 2.5.0 contains a webhook forgery vulnerability in the GitHub Webhook Trigger node that fails to implement HMAC-SHA256 signature verification. Attackers who know the webhook URL can send unsigned POST requests to trigger workflows with arbitrary data, spoofing GitHub webhook events.
References
Impacted products
Vendor Product Version
n8n n8n Version: 0   ≤
Version: 2.0.0   ≤
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