← Back

CVE-2026-56357

nvd nist
Published: Jun 22, 2026Modified: Jun 24, 2026

JSON object

Loading...
6.3
Vector
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Show more
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less
Source: disclosure@vulncheck.com (Secondary)

Description

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.

Affected (4)

Products: N8n: N8n
N8n
1 product
N8n
Configuration A
4 vulnerable
Vulnerable SoftwareAffected Versions
N8n
N8n
Before 1.123.15
N8n
From 2.0.0 to 2.5.0
N8n
Before 1.123.15
N8n
From 2.0.0 to 2.5.0

Related CWEs

CWE-290
Authentication Bypass by Spoofing
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

References (2)

Source: disclosure@vulncheck.com
Vendor Advisory
Source: disclosure@vulncheck.com
Third Party Advisory

Timeline

No history available yet.