SB2026020949 - Stored XSS in n8n
Published: February 9, 2026
Security Bulletin ID
SB2026020949
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Stored cross-site scripting (CVE-ID: CVE-2025-46343)
The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data when handling attachments. A remote user can upload a specially crafted HTML file and execute arbitrary HTML and script code in user's browser in context of vulnerable website.
Remediation
Install update from vendor's website.