CVE-2026-86081
Published:September 08, 2026
Updated:September 22, 2026
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 Packages
https://github.com/n8n-io/n8n.git (GITHUB):
Affected version(s) >=n8n@2.38.0 <n8n@2.38.2Fix Suggestion:
Update to version n8n@2.38.2https://github.com/n8n-io/n8n.git (GITHUB):
Affected version(s) >=n8n@2.0.0-rc.0 <n8n@2.37.7Fix Suggestion:
Update to version n8n@2.37.7https://github.com/n8n-io/n8n.git (GITHUB):
Affected version(s) >=n8n@0.2.0 <n8n@1.123.76Fix Suggestion:
Update to version n8n@1.123.76n8n (NPM):
Affected version(s) >=2.38.0 <2.38.2Fix Suggestion:
Update to version 2.38.2n8n (NPM):
Affected version(s) >=0.0.1 <1.123.76Fix Suggestion:
Update to version 1.123.76n8n (NPM):
Affected version(s) >=2.0.0 <2.37.7Fix Suggestion:
Update to version 2.37.7n8n (NPM):
Affected version(s) >=2.0.0-rc.0 <2.37.7Fix Suggestion:
Update to version 2.37.7Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Inefficient Regular Expression Complexity
EPSS
Base Score:
0.32