Answer in brief
CVE-2026-126389 records a Medium severity (CVSS 6.3) vulnerability in n8n before 1.123.89 Authentication Bypass via Chat Trigger Embedded Chat. The current sources do not mark it as known exploited. The current feed maps n8n-io/n8n (generic), n8n-io/n8n (generic), n8n-io/n8n (generic), n8n-io/n8n (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps n8n-io/n8n (generic), n8n-io/n8n (generic), n8n-io/n8n (generic), n8n-io/n8n (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| n8n-io/n8ngeneric | >=0 <1.123.89 | 1.123.89 |
| n8n-io/n8ngeneric | >=2.46.0 <2.46.1 | 2.46.1 |
| n8n-io/n8ngeneric | >=2.0.0 <2.45.5 | 2.45.5 |
| n8n-io/n8ngeneric | >=3.0.0 <3.0.1 | 3.0.1 |
Published upstream
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 13, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 13, 2026
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.
Quoted source text, attributed separately from HOL analysis.