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CVE-2025-56265

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Date: September 7, 2025

An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3, v1.100.1, and v1.101.1 allows attackers to execute arbitrary code via uploading a crafted HTML file.

Severity Score

Related Resources (8)

https://github.com/nikolas-ch/CVEs/blob/main/N8N/N8N_v1.100.1/ChatTrigger_StoredXSSviaUnrestrictedFileUpload/StoredXSSviaUnristrictedFileUpload.txt
https://github.com/n8n-io/n8n/pull/18148
https://github.com/nikolas-ch/CVEs/tree/main/N8N/N8N_v1.100.1/ChatTrigger_StoredXSSviaUnrestrictedFileUpload
https://github.com/n8n-io/n8n/releases/tag/n8n%401.107.0
https://nvd.nist.gov/vuln/detail/CVE-2025-56265
https://github.com/nikolas-ch/CVEs/tree/main/N8N/N8N_v1.100.1
https://github.com/n8n-io/n8n
https://www.mend.io/vulnerability-database/CVE-2025-56265

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Unrestricted Upload of File with Dangerous Type

CWE-434

Top Fix

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Upgrade Version

Upgrade to version @n8n/n8n-nodes-langchain - 1.107.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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