# CVE-2026-86080

## Summary

- **CVE ID:** CVE-2026-86080
- **Severity:** MEDIUM
- **CVSS Score:** 6.3 (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N)
- **CWE:** CWE-347
- **Published:** Sep 8, 2026
- **Last Modified:** Sep 9, 2026

## 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.

## Affected Products

- n8n-io — n8n (>= 2.38.0, < 2.38.2)
- n8n-io — n8n (>= 2.0.0, < 2.37.7)
- n8n-io — n8n (< 1.123.76)

## References

- [CNA](https://github.com/n8n-io/n8n/security/advisories/GHSA-5m98-cgcr-xx3q)
- [CNA](https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76)
- [CNA](https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7)
- [CNA](https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.20%
- **EPSS Percentile:** 9.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._