n8n — Vulnerability (CVE-2026-54314)
Date: 2026-06
Affected: n8n/n8n
Attack vector: other
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2026-54314
CWE: CWE-409
CVSS: 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

n8n is an open source workflow automation platform. Prior to 2.24.0, the Compression node's Decompress operation expanded attacker-controlled archives into memory without enforcing limits on decompressed output size. An unauthenticated attacker could send a small compressed archive to a public webhook workflow using this node, causing the n8n process to terminate due to memory exhaustion and disrupting all workflows in the same instance. This vulnerability is fixed in 2.24.0.


Mitigations:

Architectural layers (MAESTRO):