CVE-2026-86080

published 2026-09-08

CVE-2026-86080: 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…

Priority P4 28 medium 5.3 CVSS 3.1

AV N AC L PR N UI N S U C N I L A N

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

9 ranges

Vendor	Product	Version range	Fixed in
n8n-io	n8n	< 1.123.76	1.123.76
n8n-io	n8n	—	—
n8n-io	n8n	—	—
n8n	n8n	< 1.123.76	1.123.76
n8n	n8n	>= 0 < 1.123.76	1.123.76
n8n	n8n	>= 2.0.0 < 2.37.7	2.37.7
n8n	n8n	>= 2.0.0 < 2.37.7	2.37.7
n8n	n8n	>= 2.38.0 < 2.38.2	2.38.2
n8n	n8n	>= 2.38.0 < 2.38.2	2.38.2

CVSS provenance

nvd v3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

nvd v4.0 6.3 MEDIUM 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/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

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CWE-347