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CVE-2026-54233— vLLM: OOM Denial of Service via Audio Decompression Bomb

Quick assessment

Affected
vllm-project vllm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

vLLM是vLLM团队开源的一个适用于 LLM 的高吞吐量和内存高效推理和服务引擎。 vLLM 0.23.1rc0之前版本存在资源管理错误漏洞，该漏洞源于/v1/audio/transcriptions端点的压缩上传大小限制未应用于解码后的PCM输出，可能导致拒绝服务攻击。

CVSS 6.5 · Medium EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
vllm-project vllm < 0.23.1rc0 affected
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I. Basic Information for CVE-2026-54233

Vulnerability Information
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Vulnerability Title
vLLM: OOM Denial of Service via Audio Decompression Bomb
Source: CVE Program / CVE List V5
Vulnerability Description
vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.23.1rc0, vLLM's /v1/audio/transcriptions endpoint limits compressed upload size but not decoded PCM output. A 25MB OPUS file expands to ~14.9GB of float32 PCM at decode time. This vulnerability is fixed in 0.23.1rc0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
vLLM 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
vLLM是vLLM团队开源的一个适用于 LLM 的高吞吐量和内存高效推理和服务引擎。 vLLM 0.23.1rc0之前版本存在资源管理错误漏洞，该漏洞源于/v1/audio/transcriptions端点的压缩上传大小限制未应用于解码后的PCM输出，可能导致拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
vllm-project vllm < 0.23.1rc0 -

II. Public POCs for CVE-2026-54233

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III. Intelligence Information for CVE-2026-54233

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Patches & Fixes for CVE-2026-54233 (1)

Vendor Advisories for CVE-2026-54233 (1)

Same Patch Batch · vllm-project · 2026-06-22 · 8 CVEs total

CVE-2026-48746 9.1 CRITICAL vLLM: OpenAI auth bypass
CVE-2026-54232 8.8 HIGH vLLM: Dependency Confusion Vulnerability in vLLM Dockerfile
CVE-2026-41523 7.5 HIGH vLLM: Security Check Bypass via assert Statement in Activation Function Loading Allows Arb
CVE-2026-47155 6.5 MEDIUM vLLM: Artifact Pin Decay in vLLM allows pinned deployments to load unpinned code, weights,
CVE-2026-54236 5.3 MEDIUM vLLM: incomplete CVE-2026-22778 fix leaks PIL repr addresses via Anthropic router
CVE-2026-53923 vLLM GGUF Kernels: int64_t to int truncation of tensor dimensions causes GPU buffer overfl
CVE-2026-54235 vLLM: temperature=NaN and temperature=Infinity bypass validation and propagate to GPU kern

IV. Related Vulnerabilities

Same product: vllm
Same vendor: vllm-project
Same weakness: CWE-409

V. Comments for CVE-2026-54233

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