CVE-2026-93839: fallo crítico en ModelTC LightLLM
LightLLM through 1.2.0 Missing Authentication in PD Master /pd_register WebSocket Endpoint
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
28Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 9.3epss 0.8%
LightLLM through 1.2.0 contains an authentication bypass vulnerability in the /pd_register WebSocket endpoint that allows unauthenticated attackers to register arbitrary nodes by supplying crafted JSON without peer address validation. Attackers can disclose full user prompts routed to their socket, trigger denial of service by replacing legitimate nodes, or make the PD Master issue requests to internal network addresses.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Productos afectados
ModelTC · LightLLMCVEs relacionadas — ModelTC LightLLM
En el mismo producto, de las más peligrosas a las menos.
CVE-2026-96560CRITICALLightLLM through 1.2.0 Unauthenticated Remote Code Execution via NCCL PD RPyC Control ChannelEPSS 1.2%CVE-2026-90919CRITICALLightLLM through 1.2.0 Unauthenticated Remote Code Execution via Config Server Pickle DeserializationEPSS 1.1%CVE-2026-103040CRITICALLightLLM through 1.2.0 Unauthenticated Remote Code Execution via Router Profiler RPyC ServiceEPSS 1.0%CVE-2026-26220CRITICALLightLLM <= 1.1.0 PD Mode Unsafe Deserialization RCEEPSS 1.0%CVE-2026-103041CRITICALLightLLM through 1.2.0 Unauthenticated Remote Code Execution via Embed Cache RPyC ServiceEPSS 0.8%CVE-2026-103042HIGHLightLLM through 1.2.0 Unauthenticated Memory Exhaustion via NCCL Control Channel set_valueEPSS 0.6%
Referencias
https://github.com/ModelTC/LightLLMhttps://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/api_http_pd.py#L26-L36https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/api_http.py#L198-L205https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/httpserver_for_pd_master/manager.py#L691-L698https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/httpserver_for_pd_master/manager.py#L714-L749https://github.com/ModelTC/LightLLM/issues/1576https://www.vulncheck.com/advisories/lightllm-through-1.2.0-missing-authentication-in-pd-master-pd-register-websocket-endpoint