CVE-2026-86080n8n: GitHub Trigger 422 Reuse Path Skips Webhook Secret Storage, Causing Signature Verification to Fail-Open
Updated under an hour ago ()
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It affects n8n-io n8n and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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.
- CVSS
- 6.3 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-347
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Sep 9, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
n8n-io n8n n8n_io:n8n (from the name) | from 2.38.0, < 2.38.2; from 2.0.0, < 2.37.7; before 1.123.76 | CNA record |
n8n n8n n8n:n8n | before 1.123.76; from 2.0.0 before 2.37.7; from 2.38.0 before 2.38.2 | NVD |
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-5m98-cgcr-xx3qx-refsource-confirm, mitigation, vendor-advisory
- https://github.com/n8n-io/n8n/releases/tag/n8n@1.123.76x-refsource-misc, release-notes
- https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7x-refsource-misc, release-notes
- https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2x-refsource-misc, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.