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I. Basic Information for CVE-2026-22776
Vulnerability Information

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Vulnerability Title
cpp-httplib vulnerable to a denial of service (DOS) using a zip bomb
Source: NVD (National Vulnerability Database)
Vulnerability Description
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.1, a Denial of Service (DoS) vulnerability exists in cpp-httplib due to the unsafe handling of compressed HTTP request bodies (Content-Encoding: gzip, br, etc.). The library validates the payload_max_length against the compressed data size received from the network, but does not limit the size of the decompressed data stored in memory.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: NVD (National Vulnerability Database)
Vulnerability Title
cpp-httplib 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
cpp-httplib是yhirose个人开发者的一款使用C++语言编写的HTTP/HTTPS服务器和客户端库。 cpp-httplib 0.30.1之前版本存在安全漏洞,该漏洞源于对压缩HTTP请求体的不安全处理,可能导致拒绝服务攻击。
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
yhirosecpp-httplib < 0.30.1 -
II. Public POCs for CVE-2026-22776
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III. Intelligence Information for CVE-2026-22776
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