CVE-2025-40931— Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id
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I. Basic Information for CVE-2025-40931
Vulnerability Information
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Vulnerability Title
Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id
Source: NVD (National Vulnerability Database)
Vulnerability Description
Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id. Apache::Session::Generate::MD5 generates session ids insecurely. The default session id generator returns a MD5 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. Note that the libapache-session-perl package in some Debian-based Linux distributions may be patched to use Crypt::URandom.
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
Apache::Session::Generate::MD5 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache::Session::Generate::MD5是Apache基金会的一个会话管理模块。 Apache::Session::Generate::MD5 1.94及之前版本存在安全漏洞，该漏洞源于使用不安全的随机数生成器生成会话ID，可能导致会话ID被预测。
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 |
|---|---|---|---|---|
| CHORNY | Apache::Session::Generate::MD5 | 0 ~ 1.94 | - |
II. Public POCs for CVE-2025-40931
| # | POC Description | Source Link | Shenlong Link |
|---|
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- CPAN Author’s Guide to Random Data for Security | security.metacpan.orgtechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2025-40931
IV. Related Vulnerabilities
Same weakness: CWE-340
- CVE-2026-5084
WebDyne::Session versions through 2.075 for Perl generates t - CVE-2026-5081
Apache::Session::Generate::ModUniqueId versions from 1.54 th - CVE-2026-5080
Dancer::Session::Abstract versions through 1.3522 for Perl g - CVE-2026-5085
Solstice::Session versions through 1440 for Perl generates s - CVE-2026-5083
Ado::Sessions versions through 0.935 for Perl generates inse
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