CVE-2026-86081: n8n-Io n8n

High severity, CVSS 7.1. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• n8n-Io n8n: from 2.38.0, before 2.38.2 (fixed in 2.38.2); from 2.0.0, before 2.37.7 (fixed in 2.37.7); before 1.123.76 (fixed in 1.123.76)

Published 2026-09-08. Last modified 2026-09-09.