rootpwn

low · CVSS v3 3.1 · CVSS v4 2.3

CVE-2026-93989

vLLM through 0.29.0 fails to properly validate bad_words token indices against the model's generation output width in Sa…

Description

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

Scores

Severity
low
CVSS v2
2.1
CVSS v3
3.1
CVSS v4
2.3
EPSS

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