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2 vulnerabilities found for Apache::Session::Generate::ModUniqueId by CHORNY
CVE-2026-5081 (GCVE-0-2026-5081)
Vulnerability from nvd – Published: 2026-05-06 12:16 – Updated: 2026-06-30 12:10
VLAI
EPSS
VEX
Title
Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 for Perl session ids are insecure
Summary
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.
Severity
9.1 (Critical)
8.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://httpd.apache.org/docs/current/mod/mod_uni… | technical-description |
| https://metacpan.org/pod/Apache::Session::Generat… | |
| http://www.openwall.com/lists/oss-security/2026/05/06/6 | |
| https://access.redhat.com/security/cve/CVE-2026-5081 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2467174 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| CHORNY | Apache::Session::Generate::ModUniqueId |
Affected:
1.54 , ≤ 1.94
(custom)
|
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
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CVE-2026-5081 (GCVE-0-2026-5081)
Vulnerability from cvelistv5 – Published: 2026-05-06 12:16 – Updated: 2026-06-30 12:10
VLAI
EPSS
VEX
Title
Apache::Session::Generate::ModUniqueId versions from 1.54 through 1.94 for Perl session ids are insecure
Summary
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.
Severity
9.1 (Critical)
8.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://httpd.apache.org/docs/current/mod/mod_uni… | technical-description |
| https://metacpan.org/pod/Apache::Session::Generat… | |
| http://www.openwall.com/lists/oss-security/2026/05/06/6 | |
| https://access.redhat.com/security/cve/CVE-2026-5081 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2467174 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| CHORNY | Apache::Session::Generate::ModUniqueId |
Affected:
1.54 , ≤ 1.94
(custom)
|
|
| Red Hat | Red Hat Hardened Images |
cpe:/a:redhat:hummingbird:1 |
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