VulnSocial

CVE-2026-56357Disclosure(n8n / n8n)

LOWCVSS 5.3 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

n8n CVEsBack to dashboard
0.0/ 10 priority

Sources & remediation

Vendor / third-party advisories
Weakness type (CWE)
CWE-290

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • n8n

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • Technical details provided in 1 signal
  • Disclosure: 1 classified signal
  • 1 total mentions across 1 day

Affected systems

Vendors
n8n
Products
n8n

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-06-22: 1Technical Details · 2026-06-22: 106-22
Signal classification1 categories
Disclosure
1100.0%
Referenced assets1 URL
By indicator
Full discourse1 post
  • Vulmon Vulnerability Feed@VulmonFeeds
    Disclosure

    CVE-2026-56357 Webhook Forgery Vulnerability in n8n GitHub Webhook Trigger Node Before 1.123.15 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-56357

    Post summary

    The text announces a new webhook forgery vulnerability (CVE-2026-56357) affecting n8n GitHub Webhook Trigger Node versions before 1.123.15.

    00000111
    4.1K followersView on X
CPE platform detail2 entries

2 of 2 entries

PartVendorProductVersionTarget SWTarget HW
Appn8nn8n-node.js-
Appn8nn8n-node.js-

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