Medium 5.3Published Jul 10, 2026

CVE-2026-58661n8n - Disk Space Exhaustion via Data-Table File Upload Endpoint

Updated under an hour ago (Oct 27, 2026, 7:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for n8n

Exploited in the last 30 days

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.

CVSS: 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Weakness (CWE): CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Analyzed
Record last updated: Jul 10, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

n8n n8n n8n:n8n (from the name)	before 2.28.0; 2.28.0 not affected	CNA record
n8n n8n n8n:n8n	before 1.123.58; before 1.123.58; from 2.0.0 before 2.28.0; from 2.0.0 before 2.28.0	NVD

References

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-w867-jm58-p9pv	vendor-advisory, mitigation
https://www.vulncheck.com/advisories/n8n-disk-space-exhaustion-via-data-table-file-upload-endpoint	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.