Bug 2538411 (CVE-2026-93989) - CVE-2026-93989 vllm: vLLM: Cross-request logits corruption via out-of-bounds token indices
Summary: CVE-2026-93989 vllm: vLLM: Cross-request logits corruption via out-of-bounds ...
Keywords:
Status: NEW
Alias: CVE-2026-93989
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-09-22 18:29 UTC by OSIDB Bzimport
Modified: 2026-09-24 12:13 UTC (History)
4 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-09-22 18:29:28 UTC 
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.
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