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I. Basic Information for CVE-2026-3784
Vulnerability Information

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Vulnerability Title
wrong proxy connection reuse with credentials
Source: NVD (National Vulnerability Database)
Vulnerability Description
curl would wrongly reuse an existing HTTP proxy connection doing CONNECT to a server, even if the new request uses different credentials for the HTTP proxy. The proper behavior is to create or use a separate connection.
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
curl 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
curl是cURL开源的一款用于从服务器传输数据或向服务器传输数据的工具。 curl存在安全漏洞,该漏洞源于错误地重用现有HTTP代理连接,可能导致使用不同凭据的新请求被错误处理。
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
VendorProductAffected VersionsCPESubscribe
curlcurl 8.18.0 ~ 8.18.0 -
II. Public POCs for CVE-2026-3784
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III. Intelligence Information for CVE-2026-3784
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IV. Related Vulnerabilities
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