CVE-2026-7141— vllm KV Block kv_cache_interface.py has_mamba_layers uninitialized resource
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I. Basic Information for CVE-2026-7141
Vulnerability Information
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Vulnerability Title
vllm KV Block kv_cache_interface.py has_mamba_layers uninitialized resource
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability was found in vllm up to 0.19.0. The affected element is the function has_mamba_layers of the file vllm/v1/kv_cache_interface.py of the component KV Block Handler. Performing a manipulation results in uninitialized resource. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. The exploit has been made public and could be used. The patch is named 1ad67864c0c20f167929e64c875f5c28e1aad9fd. To fix this issue, it is recommended to deploy a patch.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
对未经初始化资源的使用
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及之前版本存在安全漏洞，该漏洞源于KV Block Handler组件中文件vllm/v1/kv_cache_interface.py的函数has_mamba_layers的操作，可能导致未初始化资源。
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 | 0.1 | cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* |
II. Public POCs for CVE-2026-7141
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- CVE-2026-7141 | vllm up to 0.19.0 KV Block kv_cache_interface.py has_mamba_layers uninitialized resource (Issue 39146)vdb-entrytechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-7141
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V. Comments for CVE-2026-7141
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