What’s Vulnerable › Vulnerabilities
CVE-2026-54314: n8n: Denial of Service via ZIP decompression in webhook workflow
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-06-23 · updated 2026-10-26
- Weakness: CWE-409
Description
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.
Affected products
- n8n-io n8n: before 2.24.0 — fixed in 2.24.0
How to fix
Upgrade to a fixed version: n8n-io n8n 2.24.0. Check the vendor advisory for mitigations.
References
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