What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-04 · updated 2026-06-17
• Weakness: CWE-200

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.

Affected products

• n8n-io n8n: from 1.65.0 before 1.114.3 — fixed in 1.114.3

How to fix

Upgrade to a fixed version: n8n-io n8n 1.114.3. Check the vendor advisory for mitigations.

References

• https://github.com/n8n-io/n8n/commit/2c4c2953199733c791f739a40879ae31ca129aba
• https://github.com/n8n-io/n8n/security/advisories/GHSA-49mx-fj45-q3p6

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