CVE-2025-47908— Denial of service via malicious preflight requests in github.com/rs/cors
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I. Basic Information for CVE-2025-47908
Vulnerability Information
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Vulnerability Title
Denial of service via malicious preflight requests in github.com/rs/cors
Source: NVD (National Vulnerability Database)
Vulnerability Description
Middleware causes a prohibitive amount of heap allocations when processing malicious preflight requests that include a Access-Control-Request-Headers (ACRH) header whose value contains many commas. This behavior can be abused by attackers to produce undue load on the middleware/server as an attempt to cause a denial of service.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Go CORS handler 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Go CORS handler是Olivier Poitrey个人开发者的一个处理CORS请求的可配置处理程序。 Go CORS handler存在安全漏洞，该漏洞源于处理恶意预检请求时可能导致堆分配过多，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 |
|---|---|---|---|---|
| github.com/rs/cors | github.com/rs/cors | 1.9.0 ~ 1.11.0 | - |
II. Public POCs for CVE-2025-47908
| # | POC Description | Source Link | Shenlong Link |
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