CVE-2026-9540— vllm-project vllm OpenAI-compatible Serving Path denial of service
Possible ATT&CK Techniques 1AI
T1499 · Endpoint Denial of ServiceAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| vllm-project | vllm | 0.19.0 | affected |
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I. Basic Information for CVE-2026-9540
Vulnerability Information
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Vulnerability Title
vllm-project vllm OpenAI-compatible Serving Path denial of service
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was identified in vllm-project vllm 0.19.0. This issue affects some unknown processing of the component OpenAI-compatible Serving Path. Such manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The pull request to fix this issue awaits acceptance.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
不恰当的资源关闭或释放
Source: NVD (National Vulnerability Database)
Vulnerability Title
vLLM 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
vLLM是vLLM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 0.19.0版本存在安全漏洞，该漏洞源于OpenAI-compatible Serving Path组件中未知处理操作不当，可能导致拒绝服务。
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 | 0.19.0 | cpe:2.3:a:vllm-project:vllm:*:*:*:*:*:*:*:* |
II. Public POCs for CVE-2026-9540
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-9540 (1)
Vendor Pages for CVE-2026-9540 (1)
Other References for CVE-2026-9540 (1)
IV. Related Vulnerabilities
Same product: vllm
- CVE-2026-44223
vLLM: extract_hidden_states speculative decoding crashes ser - CVE-2026-44222
vLLM: Remote DoS via Special-Token Placeholders - CVE-2026-7141
vllm KV Block kv_cache_interface.py has_mamba_layers uniniti - CVE-2026-34756
vLLM Affected by Unauthenticated OOM Denial of Service via U - CVE-2026-34755
vLLM Affected by Denial of Service via Unbounded Frame Count
Same vendor: vllm-project
- CVE-2026-4944
Hardcoded trust_remote_code=True in vllm-project/vllm Bypass - CVE-2026-44223
vLLM: extract_hidden_states speculative decoding crashes ser - CVE-2026-44222
vLLM: Remote DoS via Special-Token Placeholders - CVE-2026-34756
vLLM Affected by Unauthenticated OOM Denial of Service via U - CVE-2026-34755
vLLM Affected by Denial of Service via Unbounded Frame Count
Same weakness: CWE-404
- CVE-2026-10190
Tenda W12 Web Management httpd cgiSysWebTimeoutSet denial of - CVE-2026-10117
Open5GS nghttp2-server.c ogs_pool_id_calloc denial of servic - CVE-2026-10116
Open5GS ue-authentications Endpoint ogs-timer.c ogs_sbi_xact - CVE-2026-10115
Open5GS Shared NF-profile nnrf-handler.c denial of service - CVE-2026-10113
Open5GS Shared NF-profile nnrf-handler.c denial of service
V. Comments for CVE-2026-9540
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