CVE-2025-61917

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

State: Published
Severity: 7.7 High
Published: Feb 4, 2026
Updated: Feb 5, 2026
Reserved: Oct 3, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.7 High	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-668 Exposure of Resource to Wrong Sphere
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
n8nn8n-io	>= 1.65.0, < 1.114.3Affected

References

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