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CVE-2026-103246

7.7 HIGHpublic exploit available

Published 2026-10-01 · Updated 2026-10-06

AI risk analysis

Summary
The flaw allows attackers to decrypt and exfiltrate plaintext secrets by referencing arbitrary credential IDs, bypassing ownership verification.
Exploitability
Exploitation is relatively easy given the lack of ownership verification. Attackers need access to the inline agent node-tool introspection feature.
Blast radius
If exploited, the impact is high as it can lead to complete compromise of sensitive secrets.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to n8n version 2.39.6 or later, or 2.40.1 or later, to address the vulnerability.
auth-bypasssecrets-exfiltrationweb

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD 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.

CVSS vector

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

Weaknesses

CWE-639

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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