CVE-2026-86080

n8n: GitHub Trigger 422 Reuse Path Skips Webhook Secret Storage, Causing Signature Verification to Fail-Open

Published: Sep 8, 2026Updated: Sep 11, 2026 Sources: CVE List NVDCWE-347

5.3MEDIUM

Description

n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the GitHub Trigger generated a webhook secret but discarded it when GitHub returned HTTP 422 and the node reused an existing webhook. Workflow static data then retained webhookId without webhookSecret, and X-Hub-Signature-256 verification accepted deliveries without a stored secret. The affected logic includes packages/nodes-base/nodes/Github/GithubTriggerHelpers.ts and the 422 webhook reuse path. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-347

Affected Products

n8n-io

commercial·DEaka n8n

n8nOn-premWeb App

Cloud & SaaS / container-orchestration

n8n

oss-project

n8nSaaSWeb App

Cloud & SaaS / saas-application

Exploitability

Workaround Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Collection

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References

https://github.com/n8n-io/n8n/security/advisories/GHSA-5m98-cgcr-xx3q

github.com

https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76

github.com

https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7

github.com

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