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TI-2026-58886 Aliases CVE-2026-86081GHSA-j535-v25q-vx3q

n8n: Regular Expression Denial of Service in the Default Blocked-File-Pattern Match via a Git Node Clone Path

Priority LOW 38CWE-1333Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-1333.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0056 46th percentileScored 2026-11-07
Fix Fixed n8n (n8n-io): 2.38.2, 2.37.7, 1.123.76n8n (npm): 1.123.76, 2.38.2, 2.37.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
n8nn8n2.38.0 to before 2.38.2; 2.0.0 to before 2.37.7; before 1.123.762.38.2, 2.37.7, 1.123.76Patch availableCNA
—n8n (npm)before 1.123.761.123.76Patch availableGHSA-j535-v25q-vx3q
—n8n (npm)2.38.0 to before 2.38.22.38.2Patch availableGHSA-j535-v25q-vx3q
—n8n (npm)2.0.0 to before 2.37.72.37.7Patch availableGHSA-j535-v25q-vx3q
  • n8n Vendorn8n Affected 2.38.0 to before 2.38.2; 2.0.0 to before 2.37.7; before 1.123.76 Fixed in 2.38.2, 2.37.7, 1.123.76 Patch available CNA
  • n8n (npm) Vendor— Affected before 1.123.76 Fixed in 1.123.76 Patch available GHSA-j535-v25q-vx3q
  • n8n (npm) Vendor— Affected 2.38.0 to before 2.38.2 Fixed in 2.38.2 Patch available GHSA-j535-v25q-vx3q
  • n8n (npm) Vendor— Affected 2.0.0 to before 2.37.7 Fixed in 2.37.7 Patch available GHSA-j535-v25q-vx3q

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*——n8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:* Versions — — ·n8n

Remediation

  • Fix · CNA n8n (n8n-io) Fixed in 2.38.2, 2.37.7, 1.123.76
  • Fix · GHSA-j535-v25q-vx3q n8n (npm) Fixed in 1.123.76 Advisory →
  • Fix · GHSA-j535-v25q-vx3q n8n (npm) Fixed in 2.38.2 Advisory →
  • Fix · GHSA-j535-v25q-vx3q n8n (npm) Fixed in 2.37.7 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-86081
  2. 2026-10-03 Alias added: GHSA-j535-v25q-vx3q

References

Advisory 1

Other 5

  • TI-2025-42131 n8n Vulnerable to Remote Code Execution via Expression Injection KEVCVSS 3.1CRITICAL 10.0
  • TI-2026-17560 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling CVSS 3.1CRITICAL 10.0
  • TI-2026-01167 Authenticated users can bypass the Expression sandbox mechanism to achieve full remote… CVSS 3.1CRITICAL 9.9
  • TI-2026-00644 Sandbox escape in n8n Python task runner allows for arbitrary code execution on the underlying host. CVSS 3.1CRITICAL 9.9
  • TI-2026-82991 Code execution in n8n via deprecated Function nodes CVSS 4.0HIGH 8.7
  • TI-2025-35293 An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3… CVSS 3.1HIGH 8.8
See all 233 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences