n8n is an open source workflow automation platform. Prior to 2.24.0, the Compression nodes 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
The product does not handle or incorrectly handles a compressed input with a very high compression ratio that produces a large output.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| N8n | N8n | * | 2.24.0 (excluding) |