CVE-2026-54308: CWE-290: Authentication Bypass by Spoofing in n8n-io n8n
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.
AI Analysis
Technical Summary
CVE-2026-54308 is an authentication bypass vulnerability (CWE-290) in the n8n open source workflow automation platform. Specifically, in versions before 2.25.7 and 2.26.2, the MicrosoftAgent365Trigger and StripeTrigger nodes did not validate inbound requests properly. This allowed unauthenticated attackers who know the webhook URL to send forged payloads, triggering workflows with attacker-controlled data. The vulnerability has a CVSS 4.0 score of 6.3 (medium severity) and is fixed in versions 2.25.7 and 2.26.2.
Potential Impact
An attacker can bypass authentication by submitting forged requests to specific webhook nodes, causing workflows to execute with attacker-controlled input. This could lead to unauthorized workflow execution and potential downstream effects depending on the workflow logic. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade affected n8n installations to version 2.25.7 or later, or 2.26.2 or later, where the vulnerability is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed fixed in these versions.
CVE-2026-54308: CWE-290: Authentication Bypass by Spoofing in n8n-io n8n
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.
CVSS v4.0
Score 6.3medium
Affected software
pkg:github/n8n-io/n8nRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-54308 is an authentication bypass vulnerability (CWE-290) in the n8n open source workflow automation platform. Specifically, in versions before 2.25.7 and 2.26.2, the MicrosoftAgent365Trigger and StripeTrigger nodes did not validate inbound requests properly. This allowed unauthenticated attackers who know the webhook URL to send forged payloads, triggering workflows with attacker-controlled data. The vulnerability has a CVSS 4.0 score of 6.3 (medium severity) and is fixed in versions 2.25.7 and 2.26.2.
Potential Impact
An attacker can bypass authentication by submitting forged requests to specific webhook nodes, causing workflows to execute with attacker-controlled input. This could lead to unauthorized workflow execution and potential downstream effects depending on the workflow logic. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade affected n8n installations to version 2.25.7 or later, or 2.26.2 or later, where the vulnerability is fixed. No other mitigation or temporary workaround is indicated. Patch status is confirmed fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-12T18:42:02.222Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3ab6daeed863c81e4f9f19
Added to database: 06/23/2026, 16:39:54 UTC
Last enriched: 06/30/2026, 23:18:20 UTC
Last updated: 08/07/2026, 12:41:12 UTC
Views: 56
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