HIGHCVSS v3.1 7.5Vulnerability
CVE-2026-126391
n8n before 1.123.89 contains an insufficient isolation vulnerability in workflow expression evaluation that allows authenticated users to escape the sandbox. Attackers with permission to create or modify workflows can craft expressions referencing unexpected JavaScript properties to execute arbitrary code on the n8n host.
Properties
- Severity
- HIGH
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00529
- Cvss severity
- HIGH
- Cvss score
- 7.5
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Last source
- FIRST EPSS
- Score
- 7.5
- Cvss version
- 3.1
- Cve id
- CVE-2026-126391
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- First seen by Signal
- 2026-11-13T17:31:47+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- Published at
- 2026-11-13T10:17:42.823
- Last modified
- 2026-11-13T16:18:20.313
- Epss percentile
- 0.4531
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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