n8n: Denial of Service via ZIP decompression in webhook workflow
- Product
- n8n
- CVE
- CVE-2026-54314
- Affected
- n8n < 2.24.0
- Fixed in
- 2.24.0
Last verified against sources: October 26, 2026
Am I affected?
n8n: affected n8n < 2.24.0. Fixed in 2.24.0.
- Check your version: run
npm ls n8n. Versions < 2.24.0 of n8n are affected. [1]
What to do now
- Upgrade to the fixed version: run
npm install n8n@2.24.0(first patched version 2.24.0). [1] - Upgrade to n8n version 2.24.0 or later to remediate the vulnerability. [1]
- If upgrading is not immediately possible, disable the Compression node by adding
n8n-nodes-base.compressionto theNODES_EXCLUDEenvironment variable. [1] - Restrict public webhook workflows that accept archive file uploads to authenticated endpoints only. [1]
General practice, not from the source: if the affected software could read tokens or credentials, rotate them after upgrading; pin versions and review changes before updating tools your agents run.
What happened
- The Compression node's Decompress operation expanded attacker-controlled archives into memory without enforcing limits on decompressed output size. [1]
Impact
- 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. [1]
What was done
Sources
- GHSA-jqpw-qww5-cj4c — GitHub Advisory Database
Every statement above was checked against these sources before publishing. Spotted an error? Tell us and we will correct it with a dated note.
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[CVE-2026-54314] n8n: Denial of Service via ZIP decompression in webhook workflow
Product: n8n | Affected: n8n < 2.24.0 | Fixed in: 2.24.0
Summary: The Compression node's Decompress operation expanded attacker-controlled archives into memory without enforcing limits on decompressed output size.
Source & remediation on AgentArmorHQ: https://agentarmorhq.com/incidents/2026/06/cve-2026-54314-n8nCorrections
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