Is this vulnerability remotely exploitable?

Yes, in practice it can be. An attacker who can create or control workflows or custom nodes that are executed by the n8n task runner may be able to read residual data from uninitialized buffers, even if they do not have direct system or shell access.

What level of access does an attacker need to exploit this?

The attacker generally needs the ability to define or modify workflows, tasks, or custom nodes that run within the affected n8n instance. In multi-tenant or shared environments, a tenant with such capabilities could potentially access data originating from other tenants or users.

What is the safest general fix pattern for this issue?

The safest pattern is to eliminate unsafe buffer allocations from any path where buffer contents can be observed by untrusted or semi-trusted code. Use buffer allocation APIs that zero-initialize memory, and ensure all buffers are explicitly filled with known data before being read.

Severity:

HIGH RISK

(7.7)

Uninitialized Memory Exposure (CWE-200) in n8n Task Runner Buffer Allocation

CVE-2025-61917

Published:

Feb 4, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Information Disclosure via Uninitialized Memory

CWE:

CWE-200;CWE-668

Impact:

Exposure of sensitive data from process memory to untrusted workflow code

Severity:

HIGH RISK

(7.7)

CVSS Version:

3.1

Vulnerability Type

Category:

Information Disclosure via Uninitialized Memory

CWE:

CWE-200;CWE-668

Impact:

Exposure of sensitive data from process memory to untrusted workflow code

Severity:

HIGH RISK

(7.7)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Uninitialized Memory Exposure (CWE-200) in n8n Task Runner Buffer Allocation

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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