CVE-2026-54303: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in n8n-io n8n
A reflected cross-site scripting (XSS) vulnerability exists in n8n prior to version 2.24.0. This occurs in the Meta and Microsoft Teams trigger nodes where a query parameter is reflected in the HTTP response without proper sanitization or Content-Security-Policy headers. The vulnerability allows a logged-in user to be exposed to XSS attacks when visiting a crafted URL. The issue is fixed in version 2.24.0.
AI Analysis
Technical Summary
n8n-io's n8n workflow automation platform has a reflected XSS vulnerability (CWE-79) in versions before 2.24.0. Specifically, an endpoint in the Meta and Microsoft Teams trigger nodes reflects a query parameter into the HTTP response without sanitization or Content-Security-Policy headers. This enables reflected cross-site scripting attacks in the context of the n8n origin when a logged-in user visits a maliciously crafted URL. The vulnerability is addressed in version 2.24.0.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary scripts in the context of the logged-in user's browser session on the n8n platform. This can lead to actions performed with the user's privileges, potentially exposing sensitive information or enabling further attacks within the application context.
Mitigation Recommendations
Upgrade n8n to version 2.24.0 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are indicated. Users should apply this update promptly to mitigate the risk.
CVE-2026-54303: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in n8n-io n8n
Description
A reflected cross-site scripting (XSS) vulnerability exists in n8n prior to version 2.24.0. This occurs in the Meta and Microsoft Teams trigger nodes where a query parameter is reflected in the HTTP response without proper sanitization or Content-Security-Policy headers. The vulnerability allows a logged-in user to be exposed to XSS attacks when visiting a crafted URL. The issue is fixed in version 2.24.0.
CVSS v4.0
Score 6.8medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
n8n-io's n8n workflow automation platform has a reflected XSS vulnerability (CWE-79) in versions before 2.24.0. Specifically, an endpoint in the Meta and Microsoft Teams trigger nodes reflects a query parameter into the HTTP response without sanitization or Content-Security-Policy headers. This enables reflected cross-site scripting attacks in the context of the n8n origin when a logged-in user visits a maliciously crafted URL. The vulnerability is addressed in version 2.24.0.
Potential Impact
Successful exploitation allows an attacker to execute arbitrary scripts in the context of the logged-in user's browser session on the n8n platform. This can lead to actions performed with the user's privileges, potentially exposing sensitive information or enabling further attacks within the application context.
Mitigation Recommendations
Upgrade n8n to version 2.24.0 or later, where this vulnerability is fixed. No other official remediation or temporary fixes are indicated. Users should apply this update promptly to mitigate the risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-12T17:46:37.294Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3aafb0eed863c81e44dd54
Added to database: 06/23/2026, 16:09:20 UTC
Last enriched: 06/23/2026, 16:25:15 UTC
Last updated: 06/23/2026, 16:29:14 UTC
Views: 2
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