MEDIUM 5.3 NVD
CVE-2026-84207
Heym before 0.0.98 fails to apply SSRF egress guards to WebSocket Send and WebSocket Trigger nodes, allowing authenticated users to connect to internal services
Heym before 0.0.98 fails to apply SSRF egress guards to WebSocket Send and WebSocket Trigger nodes, allowing authenticated users to connect to internal services. Attackers can craft workflow nodes with arbitrary URLs and headers to reach internal services and read responses from the WebSocket Trigger node.
References
- https://github.com/heymrun/heym
- https://github.com/heymrun/heym/blob/v0.0.97/backend/app/services/websocket_trigger_servic
- https://github.com/heymrun/heym/blob/v0.0.97/backend/app/services/websocket_utils.py
- https://github.com/heymrun/heym/commit/540aade7c7495295062f32f4dfd0d6805f066f0c
- https://github.com/heymrun/heym/releases/tag/v0.0.98
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-09-01 via NVD.
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