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I. Basic Information for CVE-2025-40923
Vulnerability Information

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Vulnerability Title
Plack-Middleware-Session before version 0.35 for Perl generates session ids insecurely
Source: NVD (National Vulnerability Database)
Vulnerability Description
Plack-Middleware-Session before version 0.35 for Perl generates session ids insecurely. The default session id generator returns a SHA-1 hash seeded with the built-in rand function, the epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage. Predicable session ids could allow an attacker to gain access to systems.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
可预测问题
Source: NVD (National Vulnerability Database)
Vulnerability Title
Plack::Middleware::Session 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Plack::Middleware::Session是plack开源的一个Plack的极简会话库。 Plack::Middleware::Session 0.35之前版本存在安全漏洞,该漏洞源于会话ID生成不安全。
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
MIYAGAWAPlack::Middleware::Session 0.01 ~ 0.35 -
II. Public POCs for CVE-2025-40923
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III. Intelligence Information for CVE-2025-40923
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