CVE-2026-86077

MediumCVSS 6.5/10Last 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.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-862

Affected software

Vendor	Product	Versions
n8n-io	n8n	< 2.37.7; >= 2.38.0, < 2.38.2

References

https://github.com/n8n-io/n8n/releases/tag/n8n@2.37.7Release Notes
https://github.com/n8n-io/n8n/releases/tag/n8n@2.38.2Release Notes
https://github.com/n8n-io/n8n/security/advisories/GHSA-35jj-42hp-8gmqMitigation, Vendor Advisory

Timeline

Published: Sep 8, 2026
Last modified: Sep 14, 2026
NVD status: Analyzed

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