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CVE-2026-103252

7.7 HIGHpublic exploit available

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

AI risk analysis

Summary
The flaw allows attackers to bypass authorization and interpolate sensitive variables in credential test requests, potentially leading to data exfiltration.
Exploitability
Exploitation is moderately hard as it requires attackers to specify an arbitrary project ID, but preconditions include access to the credential test endpoint.
Blast radius
If exploited, this could lead to significant data loss or exposure of sensitive information within the affected projects.
Detection
No reliable host or network indicator is derivable from the published description.
Prioritized remediation
Upgrade to n8n version 1.123.80 or later, 2.39.6 or later, or 2.40.1 or later.
auth-bypassdata-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 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain an authorization bypass vulnerability in the credential test endpoint that resolves project-scoped variables without validating caller access. Attackers can specify an arbitrary project ID in the request body to interpolate sensitive variables into credential test requests sent to attacker-controlled hosts for exfiltration.

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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