CVE-2026-111160

LightLLM through 1.2.0 Unauthenticated DoS via pd_kv_trans_params Deserialization

LightLLM through 1.2.0 contains a denial of service vulnerability that allows unauthenticated attackers to crash the inference worker by supplying the internal pd_kv_trans_params field to the /generate endpoint. Attackers can send a single request whose parameters cause pickle.loads to fail in InferSamplingParams, killing the inference thread while /health stays up and all later requests hang until restart.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Modeltc

Products

Lightllm

CVE-2026-103243

LightLLM through 1.2.0 Server-Side Request Forgery via multimodal endpoints

LightLLM through 1.2.0 fails to validate image_url and audio_url parameters in multimodal endpoints, allowing unauthenticated attackers to perform server-side request forgery. Attackers can supply arbitrary URLs to fetch internal resources, with vision model processing disclosing content or error responses revealing internal network topology.

CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed

Vendors

Modeltc

Products

Lightllm

CVE-2026-103042

LightLLM through 1.2.0 Unauthenticated Memory Exhaustion via NCCL Control Channel set_value

LightLLM through 1.2.0 contains a memory exhaustion vulnerability in the NCCL control channel when started with --pd_trans_mode nccl, allowing unauthenticated attackers to exhaust KV-transfer worker memory. Attackers can call the exposed_set_value method to store unbounded key-value pairs without size limits, causing the worker process to crash and triggering node failure.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Modeltc

Products

Lightllm

CVE-2026-103395

LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Visual-Only RPyC Service

LightLLM through 1.2.0 visual_only deployments expose an unauthenticated RPyC service with allow_pickle enabled that deserializes attacker-supplied arguments in the remote_infer_images method. Attackers can reach the visual RPyC port and pass objects with __reduce__ methods to execute arbitrary code with service account privileges.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed

Vendors

Modeltc

Products

Lightllm

CVE-2026-103270

LightLLM through 1.2.0 Missing Authentication on RL Control Routes

LightLLM through 1.2.0 mounts reinforcement learning control routes on the public HTTP API without authentication checks. Unauthenticated attackers can call endpoints like /pause_generation, /abort_request, /flush_cache, and /init_weights_update_group to disrupt inference operations and wedge workers on deployments started with --enable_rl.

CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed

Vendors

Modeltc

Products

Lightllm

CVE-2026-103041

LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Embed Cache RPyC Service

LightLLM through 1.2.0 multimodal deployments expose an unauthenticated RPyC cache service with pickle deserialization enabled on all interfaces. Attackers can send crafted serialized objects to exposed cache methods to execute arbitrary code with service privileges.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed

Vendors

Modeltc

Products

Lightllm

CVE-2026-103040

LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Router Profiler RPyC Service

LightLLM through 1.2.0 contains a remote code execution vulnerability in the router profiler service when started with --enable_profiling flag. The service exposes an unauthenticated RPyC server with pickle deserialization enabled, allowing attackers to execute arbitrary code by sending crafted serialized objects to the profiler command queue.

CVSS 4.0 · 9.3 Critical EPSS 1.0% KEV · Not listed

Vendors

Modeltc

Products

Lightllm

CVE-2026-96560

LightLLM through 1.2.0 Unauthenticated Remote Code Execution via NCCL PD RPyC Control Channel

LightLLM through 1.2.0 contains a remote code execution vulnerability in the KV-transfer worker when started with --pd_trans_mode nccl, which exposes an unauthenticated RPyC control channel that deserializes attacker-supplied data. Attackers can send malicious pickled objects to the exposed RPyC ThreadedServer to execute arbitrary code with the privileges of the LightLLM service account.

CVSS 4.0 · 9.3 Critical EPSS 1.2% KEV · Not listed

Vendors

Modeltc

Products

Lightllm

CVE-2026-93839

LightLLM through 1.2.0 Missing Authentication in PD Master /pd_register WebSocket Endpoint

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 · 9.3 Critical EPSS < 1% KEV · Not listed

Vendors

Modeltc

Products

Lightllm

CVE-2026-90919

LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Config Server Pickle Deserialization

LightLLM through 1.2.0 contains a remote code execution vulnerability in the Config Server's unauthenticated /visual_register WebSocket endpoint that passes the first client frame directly to pickle.loads(). Attackers can reach the Config Server port and send a malicious serialized payload with a __reduce__ method to execute arbitrary code with Config Server process privileges.

CVSS 4.0 · 9.3 Critical EPSS 1.1% KEV · Not listed

Vendors

Modeltc

Products

Lightllm

CVE-2026-26220

LightLLM <= 1.1.0 PD Mode Unsafe Deserialization RCE

LightLLM version 1.1.0 and prior contain an unauthenticated remote code execution vulnerability in PD (prefill-decode) disaggregation mode. The PD master node exposes WebSocket endpoints that receive binary frames and pass the data directly to pickle.loads() without authentication or validation. A remote attacker who can reach the PD master can send a crafted payload to achieve arbitrary code execution.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed

Vendors

Modeltc

Products

Lightllm