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Inefficient Regular Expression Complexity Affecting n8n package, versions <2.37.7-r0

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.32% (26th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-N8N-19688481
  • published12 Sept 2026
  • disclosed8 Sept 2026
Report a new vulnerability Found a mistake?

Introduced: 8 Sep 2026

NewCVE-2026-86081  (opens in a new tab)
CWE-1333  (opens in a new tab)

How to fix?

Upgrade Minimos:latest n8n to version 2.37.7-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 is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the Git node clone operation matched an attacker-controlled destination path against the default N8N_BLOCK_FILE_PATTERNS regular expression. The pattern ^(./).git(/.)$ allowed catastrophic backtracking and ran synchronously in the main n8n process. An authenticated workflow editor could therefore freeze the instance with one workflow execution; the affected default is declared in packages/@n8n/config/src/configs/security.config.ts. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.