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.
History

Wed, 02 Sep 2026 04:30:00 +0000

Type Values Removed Values Added
First Time appeared Heymrun
Heymrun heym
Vendors & Products Heymrun
Heymrun heym

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
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.
Title Heym before 0.0.98 SSRF via WebSocket endpoints
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': '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'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-09-01T15:19:00.923Z

Updated: 2026-09-01T17:34:22.997Z

Reserved: 2026-09-01T11:03:27.973Z

Link: CVE-2026-84207

cve-icon Vulnrichment

Updated: 2026-09-01T17:30:18.734Z

cve-icon NVD

Status : Deferred

Published: 2026-09-01T16:17:35.763

Modified: 2026-09-08T20:18:59.270

Link: CVE-2026-84207

cve-icon Redhat

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