CVE-2026-53869: fallo de gravedad alta en NousResearch hermes-agent
Hermes Agent < 0.16.0 - DNS Rebinding Bypass via WebSocket Endpoints
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 8.7epss 0.6%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Productos afectados
NousResearch · hermes-agentCVEs relacionadas — NousResearch hermes-agent
En el mismo producto, de las más peligrosas a las menos.
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Referencias
https://github.com/NousResearch/hermes-agent/commit/d9ec90585cf7616b5972e44cf8d92bb569fc3febhttps://github.com/NousResearch/hermes-agent/pull/30221https://github.com/NousResearch/hermes-agent/pull/31685https://github.com/NousResearch/hermes-agent/releases/tag/v2026.6.5https://www.vulncheck.com/advisories/hermes-agent-dns-rebinding-bypass-via-websocket-endpoints