CVE-2026-111160
LightLLM through 1.2.0 Unauthenticated DoS via pd_kv_trans_params Deserialization
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-502 |
| Vendor | modeltc |
| Product | lightllm |
| Published | Oct 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
ModelTC / LightLLM
0 ≤ 1.2.0
References
github.com: https://github.com/ModelTC/LightLLM/issues/1629 github.com: https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/api_lightllm.py#L37-L43 github.com: https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/core/objs/sampling_params.py#L356-L357 github.com: https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/router/model_infer/infer_batch.py#L484-L485 github.com: https://github.com/ModelTC/LightLLM vulncheck.com: https://www.vulncheck.com/advisories/lightllm-through-1.2.0-unauthenticated-dos-via-pd-kv-trans-params-deserialization
Credits
Mingkai Yu Jiapeng Li Qiang Fu Jiajia Liu