Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-09-12T12:08:58 vllm: vLLM: Denial of Service due to improper audio header validation 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CWE-770

vLLM versions before 0.28.0 fail to validate audio sample rate headers in the transcription endpoint, allowing authenticated clients to bypass duration checks. Attackers can submit forged FLAC headers with inflated sample rates to trigger excessive memory allocation and crash the API server process affecting all tenants.

A flaw was found in vLLM. An authenticated client can exploit this vulnerability by submitting forged FLAC (Free Lossless Audio Codec) headers with an inflated sample rate to the transcription endpoint. This bypasses duration checks, leading to excessive memory allocation within the API server process. The consequence is a Denial of Service (DoS), causing the API server to crash and affecting all tenants.

Red Hat AI Inference Server Fix deferred rhaiis/vllm-cpu-rhel9 Red Hat AI Inference Server Fix deferred rhaiis/vllm-cuda-rhel9 Red Hat AI Inference Server Fix deferred rhaiis/vllm-neuron-rhel9 Red Hat AI Inference Server Fix deferred rhaiis/vllm-rocm-rhel9 Red Hat AI Inference Server Fix deferred rhaiis/vllm-spyre-rhel9 Red Hat AI Inference Server Fix deferred rhaiis/vllm-tpu-rhel9 Red Hat AI Inference Server Fix deferred rhaii/vllm-cpu-rhel9 Red Hat AI Inference Server Fix deferred rhaii/vllm-cuda-rhel9 Red Hat AI Inference Server Fix deferred rhaii/vllm-gaudi-rhel9 Red Hat AI Inference Server Fix deferred rhaii/vllm-neuron-rhel9 Red Hat AI Inference Server Fix deferred rhaii/vllm-rocm-rhel9 Red Hat AI Inference Server Fix deferred rhaii/vllm-spyre-rhel9 Red Hat AI Inference Server Fix deferred rhaii/vllm-tpu-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-aws-cuda-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-azure-cuda-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-azure-rocm-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-cuda-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-gaudi-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-gcp-cuda-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-rocm-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-kserve-agent-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-kserve-controller-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-kserve-router-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-kserve-storage-initializer-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-llm-d-kv-cache-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-th-torch-cuda-py312-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-vllm-gaudi-rhel9 https://www.cve.org/CVERecord?id=CVE-2026-90555 https://nvd.nist.gov/vuln/detail/CVE-2026-90555 https://github.com/vllm-project/vllm/security/advisories/GHSA-99f2-hwrc-gvq8 https://www.vulncheck.com/advisories/vllm-before-0.28.0-denial-of-service-via-audio-header