CVE-2026-5081— Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 for Perl session ids are insecure
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I. Basic Information for CVE-2026-5081
Vulnerability Information
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Vulnerability Title
Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 for Perl session ids are insecure
Source: NVD (National Vulnerability Database)
Vulnerability Description
Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 for Perl session ids are insecure. Apache::Session::Generate::ModUniqueId (added in version 1.54) uses the value of the UNIQUE_ID environment variable for the session id. The UNIQUE_ID variable is set by the Apache mod_unique_id plugin, which generates unique ids for the request. The id is based on the IPv4 address, the process id, the epoch time, a 16-bit counter and a thread index, with no obfuscation. The server IP is often available to the public, and if not available, can be guessed from previous session ids being issued. The process ids may also be guessed from previous session ids. The timestamp is easily guessed (and leaked in the HTTP Date response header). The purpose of mod_unique_id is to assign a unique id to requests so that events can be correlated in different logs. The id is not designed, nor is it suitable for security purposes.
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::ModUniqueId 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache::Session::Generate::ModUniqueId是RRWO个人开发者的一个会话ID生成模块。 Apache::Session::Generate::ModUniqueId 1.54版本至1.94版本存在安全漏洞，该漏洞源于使用UNIQUE_ID环境变量生成会话ID，该ID基于IPv4地址、进程ID、纪元时间、16位计数器和线程索引且未混淆，可能导致会话ID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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| CHORNY | Apache::Session::Generate::ModUniqueId | 1.54 ~ 1.94 | - |
II. Public POCs for CVE-2026-5081
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|---|
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- mod_unique_id - Apache HTTP Server Version 2.4technical-description
- https://nvd.nist.gov/vuln/detail/CVE-2026-5081
IV. Related Vulnerabilities
Same weakness: CWE-340
- CVE-2026-5084
WebDyne::Session versions through 2.075 for Perl generates t - 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 - CVE-2026-5082
Amon2::Plugin::Web::CSRFDefender versions from 7.00 through
V. Comments for CVE-2026-5081
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