CVE-2026-54308: CWE-290: Authentication Bypass by Spoofing in n8n-io n8n
n8n versions prior to 2.25.7 and 2.26.2 contain an authentication bypass vulnerability in the MicrosoftAgent365Trigger and StripeTrigger nodes. These nodes did not validate inbound requests, allowing an unauthenticated attacker who knows the webhook URL to submit forged payloads and trigger workflows with attacker-controlled data. The issue is fixed in versions 2.25.7 and 2.26.2.
AI Analysis
Technical Summary
The vulnerability CVE-2026-54308 in n8n-io's n8n workflow automation platform involves an authentication bypass by spoofing (CWE-290). Specifically, the MicrosoftAgent365Trigger and StripeTrigger nodes failed to validate inbound requests properly in versions prior to 2.25.7 and 2.26.2. This flaw allows unauthenticated attackers who know the webhook URL to submit forged payloads, causing workflows to execute with attacker-controlled data. The vulnerability has a CVSS 4.0 base score of 6.3, indicating a medium severity level. The issue is resolved in n8n versions 2.25.7 and 2.26.2.
Potential Impact
An attacker who knows the webhook URL can bypass authentication controls on the affected nodes and submit malicious payloads. This can lead to unauthorized execution of workflows with attacker-controlled data, potentially impacting the integrity and reliability of automated processes. There is no indication of privilege escalation or direct system compromise beyond workflow manipulation.
Mitigation Recommendations
Upgrade n8n to version 2.25.7 or later, or 2.26.2 or later, where this vulnerability is fixed. Since this is an open source product and not a cloud service, applying the official patches is necessary to remediate the issue. No other mitigations are specified.
CVE-2026-54308: CWE-290: Authentication Bypass by Spoofing in n8n-io n8n
Description
n8n versions prior to 2.25.7 and 2.26.2 contain an authentication bypass vulnerability in the MicrosoftAgent365Trigger and StripeTrigger nodes. These nodes did not validate inbound requests, allowing an unauthenticated attacker who knows the webhook URL to submit forged payloads and trigger workflows with attacker-controlled data. The issue is fixed in versions 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
The vulnerability CVE-2026-54308 in n8n-io's n8n workflow automation platform involves an authentication bypass by spoofing (CWE-290). Specifically, the MicrosoftAgent365Trigger and StripeTrigger nodes failed to validate inbound requests properly in versions prior to 2.25.7 and 2.26.2. This flaw allows unauthenticated attackers who know the webhook URL to submit forged payloads, causing workflows to execute with attacker-controlled data. The vulnerability has a CVSS 4.0 base score of 6.3, indicating a medium severity level. The issue is resolved in n8n versions 2.25.7 and 2.26.2.
Potential Impact
An attacker who knows the webhook URL can bypass authentication controls on the affected nodes and submit malicious payloads. This can lead to unauthorized execution of workflows with attacker-controlled data, potentially impacting the integrity and reliability of automated processes. There is no indication of privilege escalation or direct system compromise beyond workflow manipulation.
Mitigation Recommendations
Upgrade n8n to version 2.25.7 or later, or 2.26.2 or later, where this vulnerability is fixed. Since this is an open source product and not a cloud service, applying the official patches is necessary to remediate the issue. No other mitigations are specified.
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: 06/23/2026, 16:55:22 UTC
Last updated: 06/23/2026, 16:55:22 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.