CVE-2026-103246

HIGHCVSS 7.7

Description

n8n versions before 2.39.6 and 2.40.0 before 2.40.1 fail to validate credential ownership during inline agent node-tool introspection. Attackers can reference arbitrary credential IDs to decrypt and exfiltrate plaintext secrets to attacker-controlled hosts without ownership verification.

Timeline

Published:October 1st, 2026 11:17 AM

Last modified:October 6th, 2026 1:16 AM

CVSS Scoring

CVSS v3: 7.7 (HIGH)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Weaknesses (CWE)

CWE-639

References & Reports

Advisories, patches, and third-party reports

https://github.com/n8n-io/n8n/security/advisories/GHSA-9rhv-fhr8-7q5r
https://www.vulncheck.com/advisories/n8n-before-2.39.6-and-2.40-x-before-2.40.1-credential-disclosure-via-node-tool-introspection

Source: NIST NVD · Data may lag official sources by up to one minute