CVE-2026-58661
mediumn8n 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.
Vendor / product: N8n — n8n
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
4.3
4.3 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-07-10 15:16
Modified: 2026-10-29 19:17
NVD status: Analyzed
Last synced 11 hours ago
Verified against the source API 2026-10-29 19:22 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
n8n / n8n <1.123.58, ≥2.0.0 <2.28.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://github.com/n8n-io/n8n/security/advisories/GHSA-w867-jm58-p9pv
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-w867-jm58-p9pv disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/n8n-disk-space-exhaustion-via-data-table-file-upload-... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-29 19:22 UTC · record ↗