Answer in brief
CVE-2026-86077 records a Medium severity (CVSS 0.0) vulnerability in n8n: Anonymous Approval-Gate Bypass via Reused resumeToken over the Chat WebSocket. The current sources do not mark it as known exploited. The current feed maps n8n-io/n8n (generic), n8n (npm), 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 0.0. 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), n8n (npm). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| n8n-io/n8ngeneric | < 2.37.7 || >= 2.38.0, < 2.38.2 | Not reported |
| n8nnpm | >=2.38.0,<2.38.2 | 2.38.2 |
| n8nnpm | <2.37.7 | 2.37.7 |
Published upstream
Sep 8, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Sep 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 8, 2026
n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.2, the /chat WebSocket route accepted a resumeToken and resumed a paused execution without checking that the target node supported chat messages. An anonymous form submitter who received that token could reuse it on the chat route to release a Send-and-Wait, non-chat HITL, or Wait approval gate. The affected authorization logic is packages/cli/src/chat/chat-execution-manager.ts, where canResumeOverChat did not gate the resume target. This issue is fixed in versions 2.37.7 and 2.38.2.
Quoted source text, attributed separately from HOL analysis.