TI-2025-38267 Aliases CVE-2025-61917 GHSA-49mx-fj45-q3p6

n8n Unsafe Buffer Allocation Allows In-Process Memory Disclosure in Task Runner

LOW 34CWE-200Published 2026-02-04 · Updated 2026-02-05

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Information disclosure
Confidentiality · integrity · availability: High · None · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.

Summary

n8n is an open source workflow automation platform. From version 1.65.0 to before 1.114.3, the use of Buffer.allocUnsafe() and Buffer.allocUnsafeSlow() in the task runner allowed untrusted code to allocate uninitialized memory. Such uninitialized buffers could contain residual data from within the same Node.js process (for example, data from prior requests, tasks, secrets, or tokens), resulting in potential information disclosure. This issue has been patched in version 1.114.3.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00396 34th percentileScored 2026-11-07

Fix Fixed n8n (n8n-io): 1.114.3n8n (npm): 1.114.3

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

Vendor	Product	Affected versions	Fixed in	Status	Source
n8n	n8n	1.65.0 to before 1.114.3	1.114.3	Patch available	CNA
—	n8n (npm)	1.65.0 to before 1.114.3	1.114.3	Patch available	GHSA-49mx-fj45-q3p6

n8n Vendorn8n Affected 1.65.0 to before 1.114.3 Fixed in 1.114.3 Patch available CNA
n8n (npm) Vendor— Affected 1.65.0 to before 1.114.3 Fixed in 1.114.3 Patch available GHSA-49mx-fj45-q3p6

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:n8n:n8n::::::node.js::*	1.65.0 to before 1.114.3	Vulnerable	n8n

cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:* Versions 1.65.0 to before 1.114.3 Vulnerable ·n8n

Remediation

Fix · CNA n8n (n8n-io) Fixed in 1.114.3
Fix · GHSA-49mx-fj45-q3p6 n8n (npm) Fixed in 1.114.3 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2025-61917
2026-10-03 Alias added: GHSA-49mx-fj45-q3p6

References

Patch 1

https://github.com/n8n-io/n8n/commit/2c4c2953199733c791f739a40879ae31ca129aba

Advisory 2

Other 1

https://github.com/n8n-io/n8n

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

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