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CVE-2025-61917— n8n Unsafe Buffer Allocation Allows In-Process Memory Disclosure in Task Runner

CVSS 7.7 · High EPSS 0.02% · P5
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I. Basic Information for CVE-2025-61917

Vulnerability Information
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Vulnerability Title
n8n Unsafe Buffer Allocation Allows In-Process Memory Disclosure in Task Runner
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
将资源暴露给错误范围
Source: NVD (National Vulnerability Database)
Vulnerability Title
n8n 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
n8n是n8n开源的一个可扩展的工作流自动化工具。 n8n 1.65.0版本至1.114.3之前版本存在安全漏洞，该漏洞源于使用Buffer.allocUnsafe和Buffer.allocUnsafeSlow分配未初始化内存，可能导致信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
n8n-ion8n >= 1.65.0, < 1.114.3 -

II. Public POCs for CVE-2025-61917

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III. Intelligence Information for CVE-2025-61917

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Same Patch Batch · n8n-io · 2026-02-04 · 10 CVEs total

CVE-2026-25056n8n Arbitrary File Write leading to RCE in n8n Merge Node
CVE-2026-25053n8n is Vulnerable to OS Command Injection in Git Node
CVE-2026-25055n8n Arbitrary File Write on Remote Systems via SSH Node
CVE-2026-25051n8n Improper CSP Enforcement in Webhook Responses May Allow Stored XSS
CVE-2026-25115n8n is vulnerable to Python sandbox escape
CVE-2026-25052n8n Improper File Access Controls Allow Arbitrary File Read by Authenticated Users
CVE-2026-25054n8n is Vulnerable to Stored Cross-Site Scripting via Markdown Rendering in Workflow UI
CVE-2026-25049n8n Has an Expression Escape Vulnerability Leading to RCE
CVE-2026-21893n8n Vulnerable to Command Injection in Community Package Installation

IV. Related Vulnerabilities

Same product: n8n
Same vendor: n8n-io
Same weakness: CWE-668

V. Comments for CVE-2025-61917

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