CVE-2026-93989

A flaw was found in vLLM. A remote attacker can exploit a vulnerability by providing malformed input related to 'bad words' token processing. This can lead to out-of-bounds memory access, corrupting the internal data logits memory used for generating responses for other concurrent requests. As a...

Improper Validation of Array Index

Overview vllm is an A high-throughput and memory-efficient inference and serving engine for LLMs Affected versions of this package are vulnerable to Improper Validation of Array Index via SamplingParams.updatefromtokenizer, which fails to validate badwords token indices against the model's...

PYSEC-2026-4000

vLLM through 0.29.0 fails to properly validate badwords token indices against the model's generation output width in SamplingParams.updatefromtokenizer. Attackers can supply out-of-bounds token indices that corrupt logits memory of concurrent requests, causing different in-flight HTTP requests to...

CVE-2026-93989: Improper Validation of Array Index

vLLM through 0.29.0 fails to properly validate badwords token indices against the model's generation output width in SamplingParams.updatefromtokenizer. Attackers can supply out-of-bounds token indices that corrupt logits memory of concurrent requests, causing different in-flight HTTP requests to...