MEDIUMCVSS v3.1 5.4Vulnerability
CVE-2026-126389
n8n before 1.123.89 contains an authentication bypass vulnerability in the Chat Trigger that allows unauthenticated attackers to skip n8n User Auth through the setup GET webhook route in embedded chat mode. Attackers can send unauthenticated GET requests to the chat webhook URL to read named session conversation history or trigger workflows with attacker-supplied input.
Properties
- Severity
- MEDIUM
- Nvd fetched at
- 2026-11-14T00:40:25.638091+00:00
- Epss score
- 0.00353
- Cvss severity
- MEDIUM
- Cvss score
- 5.4
- Retrieved at
- 2026-11-14T00:51:03+00:00
- Last source
- FIRST EPSS
- Score
- 5.4
- Cvss version
- 3.1
- Cve id
- CVE-2026-126389
- Cvss vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
- First seen by Signal
- 2026-11-13T17:31:47+00:00
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
- Published at
- 2026-11-13T10:17:42.467
- Last modified
- 2026-11-13T10:17:42.600
- Epss percentile
- 0.29465
Related Entities (1)
HAS_WEAKNESS (1)
Related research
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