CVE-2026-54235
vLLM: temperature=NaN and temperature=Infinity bypass validation and propagate to GPU kernels
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.23.1rc0, ll temperature validation gates use comparison operators (<, >), which silently evaluate to False for NaN and for positive Infinity in Python's IEEE 754 float semantics. Both values pass every guard and propagate to GPU sampling kernels, where they produce undefined behavior or CUDA errors that can crash the inference worker. This vulnerability is fixed in 0.23.1rc0.
| CWE | CWE-1287 |
| Vendor | vllm-project |
| Product | vllm |
| Published | Jun 22, 2026 |
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Affected Versions
vllm-project / vllm
< 0.23.1rc0