CVE-2026-84207Heym before 0.0.98 SSRF via WebSocket endpoints
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
heymrun heym heymrun:heym (from the name) | before 0.0.98; 0.0.98 not affected | CNA record |
References
- https://github.com/heymrun/heymproduct
- https://github.com/heymrun/heym/security/advisories/GHSA-mqw6-g845-w596vendor-advisory
- https://github.com/heymrun/heym/commit/540aade7c7495295062f32f4dfd0d6805f066f0cpatch
- https://github.com/heymrun/heym/releases/tag/v0.0.98release-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
- https://www.vulncheck.com/advisories/heym-before-0.0.98-ssrf-via-websocket-endpointsthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.