CVE-2026-84207
Heym before 0.0.98 SSRF via WebSocket endpoints
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 1, 2026
- Updated
- Sep 1, 2026
- Reserved
- Sep 1, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 5.4 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
heymheymrun |
|
References
- https://github.com/heymrun/heymproduct
- GitHub Security Advisory (GHSA-mqw6-g845-w596)vendor-advisory
- Patch Commitpatch
- Heym v0.0.98 Release Notesrelease-notes
- https://github.com/heymrun/heym/blob/v0.0.97/backend/app/services/websocket_utils.pytechnical-description
- https://github.com/heymrun/heym/blob/v0.0.97/backend/app/services/websocket_trigger_service.pytechnical-description
- VulnCheck Advisory: Heym before 0.0.98 SSRF via WebSocket endpointsthird-party-advisory
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