Incorrect Authorization Affecting n8n package, versions <2.39.6-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.24% (14th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-N8N-20810164
  • published11 Oct 2026
  • disclosed1 Oct 2026

Introduced: 1 Oct 2026

NewCVE-2026-103259  (opens in a new tab)
CWE-863  (opens in a new tab)

How to fix?

Upgrade Minimos:latest n8n to version 2.39.6-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream n8n package and not the n8n package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

n8n versions before 2.39.6 and 2.40.0 before 2.40.1 contain a session token leakage vulnerability in the Dynamic Credentials authorize and revoke endpoints. Attackers with resolver registration capability can capture collaborators' session tokens by setting a fallback resolver to an attacker-controlled endpoint during the account connection flow, enabling unauthorized credential access.

CVSS Base Scores

version 3.1