CVE-2026-54308

n8n: Missing Token Validation on Microsoft Agent 365 Trigger Node

State: Published
Severity: 6.3 Medium
Published: Jun 23, 2026
Updated: Jun 24, 2026
Reserved: Jun 12, 2026

Description

n8n is an open source workflow automation platform. Prior to 2.25.7 and 2.26.2, the MicrosoftAgent365Trigger and StripeTrigger node did not validate that inbound requests. As a result, an unauthenticated attacker who knows the webhook URL could submit a forged payload and cause the workflow to execute with attacker-controlled data. This vulnerability is fixed in 2.25.7 and 2.26.2.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N	GitHub_M

Weaknesses

CWE-290 Authentication Bypass by Spoofing

Affected Products

Product	Versions
n8nn8n-io	>= 2.26.0, < 2.26.2Affected < 2.25.7Affected

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-jvc7-762p-3743

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