Information disclosure in N8n
CVE-2025-61917
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (29.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000
Affected products
- N8n
- N8n-Io N8n — versions >= 1.65.0, < 1.114.3
Weakness classification (CWE)
References
- github.com/n8n-io/n8n/security/advisories/GHSA-49mx-fj45-q3p6 (Mitigation, Vendor Advisory)
- github.com/n8n-io/n8n/commit/2c4c2953199733c791f739a40879ae31ca129aba (Patch)
Frequently asked questions
- What is CVE-2025-61917?
- CVE-2025-61917 is a high-severity vulnerability in N8n, classified under Information Disclosure. CVSS score: 7.7/10. Published 2026-02-04.
- How severe is CVE-2025-61917?
- High severity. CVSS v3 base score is 7.7 out of 10.