CVE-2026-54314: CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) in n8n-io n8n
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.
AI Analysis
Technical Summary
CVE-2026-54314 describes a vulnerability in n8n (an open source workflow automation platform) versions before 2.24.0. The Compression node's Decompress operation does not enforce limits on the size of decompressed data, allowing an attacker to send a crafted compressed archive that expands to a large size in memory. This can cause memory exhaustion and crash the n8n process, resulting in denial of service for all workflows running in the same instance. The vulnerability is classified under CWE-409 (Improper Handling of Highly Compressed Data).
Potential Impact
An unauthenticated attacker can cause a denial of service by sending a small compressed archive to a public webhook workflow that uses the vulnerable Compression node. This leads to memory exhaustion and termination of the n8n process, disrupting all workflows on the affected instance. There is no indication of data disclosure or code execution from the provided information.
Mitigation Recommendations
This vulnerability is fixed in n8n version 2.24.0. Users should upgrade to version 2.24.0 or later to remediate this issue. Patch status is confirmed by the vendor stating the fix is included in 2.24.0. No other mitigation or temporary workaround is indicated.
CVE-2026-54314: CWE-409: Improper Handling of Highly Compressed Data (Data Amplification) in n8n-io n8n
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.
CVSS v4.0
Score 6.3medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-54314 describes a vulnerability in n8n (an open source workflow automation platform) versions before 2.24.0. The Compression node's Decompress operation does not enforce limits on the size of decompressed data, allowing an attacker to send a crafted compressed archive that expands to a large size in memory. This can cause memory exhaustion and crash the n8n process, resulting in denial of service for all workflows running in the same instance. The vulnerability is classified under CWE-409 (Improper Handling of Highly Compressed Data).
Potential Impact
An unauthenticated attacker can cause a denial of service by sending a small compressed archive to a public webhook workflow that uses the vulnerable Compression node. This leads to memory exhaustion and termination of the n8n process, disrupting all workflows on the affected instance. There is no indication of data disclosure or code execution from the provided information.
Mitigation Recommendations
This vulnerability is fixed in n8n version 2.24.0. Users should upgrade to version 2.24.0 or later to remediate this issue. Patch status is confirmed by the vendor stating the fix is included in 2.24.0. No other mitigation or temporary workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-12T18:42:02.223Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3aafb1eed863c81e44dd71
Added to database: 06/23/2026, 16:09:21 UTC
Last enriched: 06/30/2026, 23:18:26 UTC
Last updated: 08/04/2026, 12:46:13 UTC
Views: 50
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