CVE-2026-49140: fallo de gravedad media en HKUDS nanobot
Nanobot < 0.2.1 Denial of Service via Matrix Media Download Handler
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 5.3epss 0.3%
Nanobot prior to version 0.2.1 contains a denial of service vulnerability in the Matrix channel media download handler that allows authenticated room members to exhaust process memory and bandwidth by sending media events with missing or invalid size metadata. Attackers can send multiple concurrent Matrix media events with omitted or invalid declared sizes to trigger simultaneous large media downloads that fully materialize response bodies before post-download rejection, consuming process resources until service degradation occurs.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Productos afectados
HKUDS · nanobotCVEs relacionadas — HKUDS nanobot
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-19243MEDIUMHKUDS nanobot Shell Allowlist shell.py ExecTool._spawn os command injectionEPSS 2.3%CVE-2026-2577CRITICALNanobot Unauthenticated WhatsApp Session Hijack via WebSocket BridgeEPSS 0.7%CVE-2026-90809MEDIUMHKUDS nanobot ExecTool shell.py ExecTool._spawn argument injectionEPSS 0.6%CVE-2026-33654HIGHZero-Click Indirect Prompt Injection and Authentication Bypass via Email PollingEPSS 0.5%CVE-2026-19244MEDIUMHKUDS nanobot MCP enabledTools Scope mcp.py connect_mcp_servers access controlEPSS 0.5%CVE-2026-92576CRITICALHKUDS nanobot before 0.3.0 Server-Side Request Forgery via WebFetchToolEPSS 0.4%