Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-90555— vLLM before 0.28.0 Denial of Service via Audio Header

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 0.28.0之前版本存在资源管理错误漏洞，该漏洞源于转写端点未验证音频采样率标头，可能导致经过身份验证的客户端绕过时长检查，并通过提交采样率虚高的伪造FLAC标头触发过度内存分配，造成API服务器进程崩溃。

CVSS 6.5 · Medium EPSS 0.52% · P44

Affected Version Matrix 2

VendorProduct Version RangeStatus
vllm-project vLLM < 0.28.0 affected
0.28.0 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-90555

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
vLLM before 0.28.0 Denial of Service via Audio Header
Source: CVE Program / CVE List V5
Vulnerability Description
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.
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 0.28.0之前版本存在资源管理错误漏洞，该漏洞源于转写端点未验证音频采样率标头，可能导致经过身份验证的客户端绕过时长检查，并通过提交采样率虚高的伪造FLAC标头触发过度内存分配，造成API服务器进程崩溃。
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 ~ 0.28.0 -

II. Public POCs for CVE-2026-90555

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-90555

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-90555 (2)

Same Patch Batch · vllm-project · 2026-09-12 · 3 CVEs total

CVE-2026-90553 7.8 HIGH vLLM before 0.28.0 Remote Code Execution via LlavaOnevision2 processor
CVE-2026-90554 6.2 MEDIUM vLLM before 0.28.0 Denial of Service via audio extraction

IV. Related Vulnerabilities

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