Moderate severityNVD Advisory· Published Jul 10, 2026· Updated Jul 10, 2026
n8n - Disk Space Exhaustion via Data-Table File Upload Endpoint
CVE-2026-58661
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 packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
n8nnpm | >= 2.0.0, < 2.28.0 | 2.28.0 |
n8nnpm | < 1.123.58 | 1.123.58 |
Affected products
1Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-w867-jm58-p9pvghsaADVISORY
- github.com/n8n-io/n8n/security/advisories/GHSA-w867-jm58-p9pvghsavendor-advisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2026-58661ghsaADVISORY
- www.vulncheck.com/advisories/n8n-disk-space-exhaustion-via-data-table-file-upload-endpointghsathird-party-advisoryWEB
- github.com/n8n-io/n8n/releases/tag/[email protected]ghsaWEB
- github.com/n8n-io/n8n/releases/tag/[email protected]ghsaWEB
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