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

> CVE-2026-58661: n8n - Disk Space Exhaustion via Data-Table File Upload Endpoint. CVSS 4.3 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-58661
Last updated: 2026-10-24T23:10:00Z

- Published: 2026-07-10 13:58 UTC · Updated: 2026-10-24 23:10 UTC · Assigner: VulnCheck
- CVSS: 4.3 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- EPSS: 0.39%, 32th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-770

## 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.

## Affected vendors and products

- n8n: n8n

## Tracked companies

- [n8n](https://rewindex.com/company/n8n.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-58661)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-58661)
- [https://github.com/n8n-io/n8n/security/advisories/GHSA-w867-jm58-p9pv](https://github.com/n8n-io/n8n/security/advisories/GHSA-w867-jm58-p9pv)
- [https://www.vulncheck.com/advisories/n8n-disk-space-exhaustion-via-data-table-file-upload-endpoint](https://www.vulncheck.com/advisories/n8n-disk-space-exhaustion-via-data-table-file-upload-endpoint)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-58661 · Markdown: https://rewindex.com/cve/CVE-2026-58661.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-58661 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:16:58.409Z