# CVE-2026-86077

## Summary

- **CVE ID:** CVE-2026-86077
- **Severity:** MEDIUM
- **CVSS Score:** 6.3 (CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N)
- **CWE:** CWE-862
- **Published:** Sep 8, 2026
- **Last Modified:** Sep 14, 2026

## Description

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.

## Affected Products

- n8n-io — n8n (< 2.37.7)
- n8n-io — n8n (>= 2.38.0, < 2.38.2)

## References

- [CNA](https://github.com/n8n-io/n8n/security/advisories/GHSA-35jj-42hp-8gmq)
- [CNA](https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7)
- [CNA](https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.25%
- **EPSS Percentile:** 16.8

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._