Dashboard / CVE-2026-58661

CVE-2026-58661

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 61/100
Published: 2026-07-10 Modified: 2026-10-29 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: X
AT: None
VC: None
VI: None
VA: Low

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.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
n8n n8n < 1.123.58
n8n n8n < 1.123.58
n8n n8n 2.0.0 < 2.28.0

References & Advisories (2)

Bug Bounty Relevance

61 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

5.3 / 10.0 v4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS — Exploitation Probability

0.39%
Raw Score 0.003860
Percentile 32.6%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00386
2026-10-28
0.00386

Intelligence Sources

mitre ref →
nvd ref →

External Links