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CVE-2026-84207
Description
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.
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NReferences
- https://github.com/heymrun/heym
- https://github.com/heymrun/heym/blob/v0.0.97/backend/app/services/websocket_trigger_service.py
- 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
- https://github.com/heymrun/heym/security/advisories/GHSA-mqw6-g845-w596
- https://www.vulncheck.com/advisories/heym-before-0.0.98-ssrf-via-websocket-endpoints