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CVE PROGRAM SOURCE RECORD6.3 Medium

CVE-2026-86077

n8n: Anonymous Approval-Gate Bypass via Reused resumeToken over the Chat WebSocket

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

n8n-io n8n

  • < 2.37.7affected
  • >= 2.38.0, < 2.38.2affected

References