PT-2026-50180 · Npm · N8N

Published 2026-06-16 · Updated 2026-06-16 · CVE-2026-54314

OSV

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Impact

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.

Patches

The issue has been fixed in n8n version 2.24.0. Users should upgrade to this version or later to remediate the vulnerability. The fix introduces configurable limits on decompressed output size (N8N COMPRESSION NODE MAX DECOMPRESSED SIZE BYTES) and ZIP entry count (N8N COMPRESSION NODE MAX ZIP ENTRIES).

Workarounds

If upgrading is not immediately possible, administrators should consider the following temporary mitigations:

• Disable the Compression node by adding n8n-nodes-base.compression to the NODES EXCLUDE environment variable.
• Restrict public webhook workflows that accept archive file uploads to authenticated endpoints only.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

Fix

Weakness Enumeration

CWE-409

Related Identifiers

CVE-2026-54314

GHSA-JQPW-QWW5-CJ4C

Affected Products

N8N

References · 3

• https://osv.dev/vulnerability/GHSA-jqpw-qww5-cj4c · Vendor Advisory
• https://github.com/n8n-io/n8n/security/advisories/GHSA-jqpw-qww5-cj4c · Note
• https://github.com/n8n-io/n8n · Note