SEPTEMBER 19, 2026
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Case File

CVE-2026-58661

MEDIUM · CVSS 4.3 EPSS 0.23% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-07-10 · Last synced 2026-08-09

CyberRota Analysis

AI-Generated

The vulnerability affects n8n versions prior to 2.28.0 and 1.123.58, specifically in the data-table file upload endpoint, where the per-request quota check fails to consider files already stored in the shared temporary directory. This oversight allows authenticated users to upload files continuously, leading to potential disk space exhaustion until a cleanup occurs. Organizations using affected versions should prioritize remediation to prevent service disruptions due to storage limitations.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-58661
Severity
MEDIUM
CVSS
4.3
EPSS
0.23%

Original NVD Description

n8n before 2.28.0 (and before 1.123.58 on the 1.x branch) contains a disk space exhaustion vulnerability in the data-table file upload endpoint. The per-request quota check does not account for files already written to the shared temporary directory, allowing an authenticated user to repeatedly upload files that accumulate on disk until the periodic cleanup runs, potentially exhausting available disk space on the host.

Related CVEs

Other vulnerabilities affecting the same vendor(s)