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

What is CVE-2025-61917?

CVE-2025-61917 is a high-severity vulnerability in N8n N8n, published on 4 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-668, CWE-200

Which versions are affected by CVE-2025-61917?

2 open source packages ship an affected version, including n8n. It affects 1 product.

Products include N8n N8n.

How do I fix CVE-2025-61917?

Upgrade n8n to 1.114.3 or later.

Is CVE-2025-61917 being exploited?

There is no known exploitation of CVE-2025-61917 in the wild and no public exploit code.

Other vulnerabilities in N8n N8n

• CVE-2025-68613 n8n Improper Control of Dynamically-Managed Code Resources Exploited Critical 10.0
• CVE-2026-21877 n8n is vulnerable to Remote Code Execution via Arbitrary File Write Critical 10.0
• CVE-2026-21858 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling Critical 10.0
• CVE-2026-1470 n8n Unsafe Workflow Expression Evaluation Allows Remote Code Execution Critical 9.9
• CVE-2025-68668 n8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code Node Critical 9.9

All N8n N8n vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-49mx-fj45-q3p6.