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TI-2026-42226 Aliases CVE-2026-58661GHSA-w867-jm58-p9pv

n8n - Disk Space Exhaustion via Data-Table File Upload Endpoint

Priority LOW 24CWE-770Published · 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 · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.

Summary

n8n before 2.28.0 (and before 1.123.58 on the 1.x branch) contains a disk space exhaustion vulnerability in the data-table file upload endpoint. The per-request quota check does not account for files already written to the shared temporary directory, allowing an authenticated user to repeatedly upload files that accumulate on disk until the periodic cleanup runs, potentially exhausting available disk space on the host.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00386 32nd percentileScored 2026-11-07
Fix Fixed n8n (n8n): 2.28.0, 1.123.58n8n (npm): 2.28.0, 1.123.58

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
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
n8nn8n2.0.0 to before 2.28.02.28.0Patch availableCNA
n8nn8nbefore 1.123.581.123.58Patch availableCNA
—n8n (npm)2.0.0 to before 2.28.02.28.0Patch availableGHSA-w867-jm58-p9pv
—n8n (npm)before 1.123.581.123.58Patch availableGHSA-w867-jm58-p9pv
  • n8n Vendorn8n Affected 2.0.0 to before 2.28.0 Fixed in 2.28.0 Patch available CNA
  • n8n Vendorn8n Affected before 1.123.58 Fixed in 1.123.58 Patch available CNA
  • n8n (npm) Vendor— Affected 2.0.0 to before 2.28.0 Fixed in 2.28.0 Patch available GHSA-w867-jm58-p9pv
  • n8n (npm) Vendor— Affected before 1.123.58 Fixed in 1.123.58 Patch available GHSA-w867-jm58-p9pv

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*before 1.123.58Vulnerablen8n
cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*before 1.123.58Vulnerablen8n
cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:*2.0.0 to before 2.28.0Vulnerablen8n
cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:*2.0.0 to before 2.28.0Vulnerablen8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:* Versions before 1.123.58 Vulnerable ·n8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:* Versions before 1.123.58 Vulnerable ·n8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:* Versions 2.0.0 to before 2.28.0 Vulnerable ·n8n
  • cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:* Versions 2.0.0 to before 2.28.0 Vulnerable ·n8n

Remediation

  • Fix · CNA n8n (n8n) Fixed in 2.28.0
  • Fix · CNA n8n (n8n) Fixed in 1.123.58
  • Fix · GHSA-w867-jm58-p9pv n8n (npm) Fixed in 2.28.0 Advisory →
  • Fix · GHSA-w867-jm58-p9pv n8n (npm) Fixed in 1.123.58 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-58661
  2. 2026-10-03 Alias added: GHSA-w867-jm58-p9pv
  3. 2026-10-29 Affected versions changed · CNA

References

Advisory 2

Other 3

  • 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-2025-35293 An arbitrary file upload vulnerability in the Chat Trigger component of N8N v1.95.3… CVSS 3.1HIGH 8.8
  • TI-2023-12275 The n8n package 0.218.0 for Node.js allows Escalation of Privileges. CVSS 3.1HIGH 8.8
See all 178 →

Sources

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