Answer in brief
CVE-2026-65014 records a Medium severity (CVSS 6.3) vulnerability in n8n before 2.28.0 Authentication Bypass via test-webhook. The current sources do not mark it as known exploited. The current feed maps n8n-io/n8n (generic), n8n (npm). 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 (npm). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:* | Not reported | Not reported |
| cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| n8n-io/n8ngeneric | >=0 <2.27.4 | 2.27.4 |
| n8nnpm | <2.27.4 | 2.27.4 |
Published upstream
Jul 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 29, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 10, 2026
n8n before 2.28.0 (and before 2.27.4 on the 2.27.x branch) registers the DELETE /${restEndpoint}/test-webhook/:id endpoint before authentication middleware is applied, allowing any unauthenticated network caller who knows a workflow ID to cancel that workflow's active test webhook registration. The impact is limited to disrupting in-progress test sessions; production webhooks, persistent workflow state, and stored data are not affected.
Quoted source text, attributed separately from HOL analysis.