CVE-2026-115916

vLLM is an inference and serving engine for large language models. Prior to 0.32.0, vllm/tokenizers/hf.py computes max_token_id with an off-by-one upper bound, allowing a pre-tokenized prompt ID equal to the vocabulary size to pass validation. For a tensor-parallel size of one and an exact multiple-of-64 vocabulary, VocabParallelEmbedding.forward does not mask that value before F.embedding uses it, causing a CUDA device-side assertion and terminating the engine. This issue is fixed in version 0.32.0.
Configurations

Configuration 1 (hide)

cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*

History

28 Oct 2026, 15:36

Type Values Removed Values Added
First Time Vllm vllm
Vllm
CPE cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*
References () https://github.com/vllm-project/vllm/commit/37cecc8141e2dcba9dd534897a164d4baaf27229 - () https://github.com/vllm-project/vllm/commit/37cecc8141e2dcba9dd534897a164d4baaf27229 - Patch
References () https://github.com/vllm-project/vllm/pull/59491 - () https://github.com/vllm-project/vllm/pull/59491 - Patch
References () https://github.com/vllm-project/vllm/releases/tag/v0.32.0 - () https://github.com/vllm-project/vllm/releases/tag/v0.32.0 - Release Notes
References () https://github.com/vllm-project/vllm/security/advisories/GHSA-q97c-p368-75c4 - () https://github.com/vllm-project/vllm/security/advisories/GHSA-q97c-p368-75c4 - Patch, Vendor Advisory

26 Oct 2026, 18:17

Type Values Removed Values Added
New CVE

Information

Published : 2026-10-26 18:17

Updated : 2026-10-28 15:36


NVD link : CVE-2026-115916

Mitre link : CVE-2026-115916

CVE.ORG link : CVE-2026-115916


JSON object : View

Products Affected

vllm

  • vllm
CWE
CWE-129

Improper Validation of Array Index

CWE-193

Off-by-one Error