CVSS 3.1
10.0 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:NCVE-2026-21858
Critical (10.0) in n8n n8n. EPSS 78% chance of exploitation in the next 30 days. Fixed in n8n 1.121.0.
n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker, resulting in exposure of sensitive information stored on the system and may enable further compromise depending on deployment configuration and workflow usage. This issue is fixed in version 1.121.0.
Severity
- EPSS
- 78% chance of exploitation in the next 30 days; higher than 99% of CVEs (scores of 2026-10-31)
- CWE
- CWE-20
- Published
- Modified
- Record from
- the NVD, synced
Affected
- n8n:n8n
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-v4pr-fm98-w9pg | npm | n8n | >=1.65.0 <1.121.0 | 1.121.0 |