CVE-2026-54314 n8n: Denial of Service via ZIP decompression in webhook workflow
An unauthenticated attacker can cause a denial of service in n8n by sending a malicious compressed archive to a webhook workflow, exhausting memory.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-54314?
CVE-2026-54314 is a medium-severity denial of service vulnerability in N8n N8n, published on 23 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-409
Which versions are affected by CVE-2026-54314?
2 open source packages ship an affected version, including n8n. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
n8n npm | All versions | 2.24.0 |
n8n npm | All versions | 2.24.0 |
Products include N8n N8n.
How do I fix CVE-2026-54314?
Upgrade n8n to 2.24.0 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-54314 being exploited?
There is no known exploitation of CVE-2026-54314 in the wild and no public exploit code.
Other vulnerabilities in N8n N8n
- CVE-2025-68613 n8n Improper Control of Dynamically-Managed Code Resources
- CVE-2026-21877 n8n is vulnerable to Remote Code Execution via Arbitrary File Write
- CVE-2026-21858 n8n Vulnerable to Unauthenticated File Access via Improper Webhook Request Handling
- CVE-2026-1470 n8n Unsafe Workflow Expression Evaluation Allows Remote Code Execution
- CVE-2025-68668 n8n Vulnerable to Arbitrary Command Execution in Pyodide based Python Code Node
Sources
Also known as GHSA-jqpw-qww5-cj4c, MINI-cv92-8jjv-rgqv, ROOT-APP-NPM-CVE-2026-54314.