Vulnerability Details CVE-2026-100654
vLLM before 0.29.0 accepts user-controlled stop_token_ids on the OpenAI-compatible POST /v1/completions and POST /v1/chat/completions endpoints but validates only that the values are integers, not that each token id is within the model vocabulary/logits range. When min_tokens > 0, the stop token ids are used as logits indices to suppress stop tokens, so an out-of-range id reaches a CUDA indexing operation (index_put_) and triggers a device-side assertion. An authenticated API user can send a single malformed completion request that returns 500 Internal Server Error and puts EngineCore into a fatal state, causing subsequent requests to fail until the service is restarted (denial of service).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 22.3%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-100654
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cpe:2.3:a:vllm:vllm:0.1.0
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cpe:2.3:a:vllm:vllm:0.1.1
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cpe:2.3:a:vllm:vllm:0.1.2
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cpe:2.3:a:vllm:vllm:0.1.3
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cpe:2.3:a:vllm:vllm:0.1.4
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cpe:2.3:a:vllm:vllm:0.1.5
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cpe:2.3:a:vllm:vllm:0.1.6
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cpe:2.3:a:vllm:vllm:0.1.7
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cpe:2.3:a:vllm:vllm:0.10.0
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cpe:2.3:a:vllm:vllm:0.10.1
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cpe:2.3:a:vllm:vllm:0.10.1.1
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cpe:2.3:a:vllm:vllm:0.10.2
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cpe:2.3:a:vllm:vllm:0.11.0
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cpe:2.3:a:vllm:vllm:0.11.1
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cpe:2.3:a:vllm:vllm:0.11.2
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cpe:2.3:a:vllm:vllm:0.12.0
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cpe:2.3:a:vllm:vllm:0.13.0
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cpe:2.3:a:vllm:vllm:0.14.0
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cpe:2.3:a:vllm:vllm:0.14.1
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cpe:2.3:a:vllm:vllm:0.15.0
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cpe:2.3:a:vllm:vllm:0.15.1
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cpe:2.3:a:vllm:vllm:0.15.2
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cpe:2.3:a:vllm:vllm:0.16.0
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cpe:2.3:a:vllm:vllm:0.16.1
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cpe:2.3:a:vllm:vllm:0.17.0
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cpe:2.3:a:vllm:vllm:0.17.1
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cpe:2.3:a:vllm:vllm:0.17.2
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cpe:2.3:a:vllm:vllm:0.18.0
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cpe:2.3:a:vllm:vllm:0.18.1
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cpe:2.3:a:vllm:vllm:0.18.2
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cpe:2.3:a:vllm:vllm:0.19.0
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cpe:2.3:a:vllm:vllm:0.19.1
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cpe:2.3:a:vllm:vllm:0.19.2
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cpe:2.3:a:vllm:vllm:0.2.0
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cpe:2.3:a:vllm:vllm:0.2.1
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cpe:2.3:a:vllm:vllm:0.2.2
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cpe:2.3:a:vllm:vllm:0.2.3
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cpe:2.3:a:vllm:vllm:0.2.4
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cpe:2.3:a:vllm:vllm:0.2.5
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cpe:2.3:a:vllm:vllm:0.2.6
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cpe:2.3:a:vllm:vllm:0.2.7
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cpe:2.3:a:vllm:vllm:0.20.0
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cpe:2.3:a:vllm:vllm:0.20.1
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cpe:2.3:a:vllm:vllm:0.20.2
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cpe:2.3:a:vllm:vllm:0.21.0
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cpe:2.3:a:vllm:vllm:0.21.1
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cpe:2.3:a:vllm:vllm:0.22.0
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cpe:2.3:a:vllm:vllm:0.22.1
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cpe:2.3:a:vllm:vllm:0.23.0
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cpe:2.3:a:vllm:vllm:0.23.1
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cpe:2.3:a:vllm:vllm:0.24.0
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cpe:2.3:a:vllm:vllm:0.25.0
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cpe:2.3:a:vllm:vllm:0.25.1
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cpe:2.3:a:vllm:vllm:0.26.0
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cpe:2.3:a:vllm:vllm:0.26.1
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cpe:2.3:a:vllm:vllm:0.27.0
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cpe:2.3:a:vllm:vllm:0.27.1
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cpe:2.3:a:vllm:vllm:0.28.0
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cpe:2.3:a:vllm:vllm:0.28.1
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cpe:2.3:a:vllm:vllm:0.3.0
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cpe:2.3:a:vllm:vllm:0.3.1
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cpe:2.3:a:vllm:vllm:0.3.2
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cpe:2.3:a:vllm:vllm:0.3.3
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cpe:2.3:a:vllm:vllm:0.4.0
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cpe:2.3:a:vllm:vllm:0.4.1
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cpe:2.3:a:vllm:vllm:0.4.2
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cpe:2.3:a:vllm:vllm:0.4.3
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cpe:2.3:a:vllm:vllm:0.5.0
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cpe:2.3:a:vllm:vllm:0.5.1
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cpe:2.3:a:vllm:vllm:0.5.2
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cpe:2.3:a:vllm:vllm:0.5.3
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cpe:2.3:a:vllm:vllm:0.5.4
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cpe:2.3:a:vllm:vllm:0.5.5
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cpe:2.3:a:vllm:vllm:0.6.0
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cpe:2.3:a:vllm:vllm:0.6.1
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cpe:2.3:a:vllm:vllm:0.6.2
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cpe:2.3:a:vllm:vllm:0.6.3
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cpe:2.3:a:vllm:vllm:0.6.4
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cpe:2.3:a:vllm:vllm:0.6.5
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cpe:2.3:a:vllm:vllm:0.6.6
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cpe:2.3:a:vllm:vllm:0.7.0
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cpe:2.3:a:vllm:vllm:0.7.1
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cpe:2.3:a:vllm:vllm:0.7.2
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cpe:2.3:a:vllm:vllm:0.7.3
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cpe:2.3:a:vllm:vllm:0.8.0
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cpe:2.3:a:vllm:vllm:0.8.1
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cpe:2.3:a:vllm:vllm:0.8.2
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cpe:2.3:a:vllm:vllm:0.8.3
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cpe:2.3:a:vllm:vllm:0.8.4
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cpe:2.3:a:vllm:vllm:0.8.5
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cpe:2.3:a:vllm:vllm:0.9.0
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cpe:2.3:a:vllm:vllm:0.9.0.1
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cpe:2.3:a:vllm:vllm:0.9.1
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cpe:2.3:a:vllm:vllm:0.9.2