Hermes Agent before 0.16.0 contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation. FastAPI HTTP middleware does not execute for WebSocket upgrade requests on /api/pty, /api/ws, /api/pub, and /api/events endpoints, enabling attackers to exploit DNS rebinding and inject malicious commands or read terminal output.
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History
Thu, 18 Jun 2026 16:45:00 +0000
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Thu, 18 Jun 2026 04:45:00 +0000
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| Description | Hermes Agent before 0.16.0 contains a DNS rebinding vulnerability in WebSocket endpoints that allows remote attackers to bypass Host and Origin validation. FastAPI HTTP middleware does not execute for WebSocket upgrade requests on /api/pty, /api/ws, /api/pub, and /api/events endpoints, enabling attackers to exploit DNS rebinding and inject malicious commands or read terminal output. | |
| Title | Hermes Agent < 0.16.0 - DNS Rebinding Bypass via WebSocket Endpoints | |
| Weaknesses | CWE-306 | |
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cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-06-18T15:29:39.022Z
Reserved: 2026-06-10T21:23:54.283Z
Link: CVE-2026-53869
Updated: 2026-06-18T15:29:35.336Z
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OpenCVE Enrichment
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