UBUNTU-CVE-2026-8503

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Source
https://ubuntu.com/security/CVE-2026-8503
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8503.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-8503
Upstream
Published
2026-05-15T12:17:00Z
Modified
2026-05-20T22:03:10Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Apache::Session::Generate::SHA256 versions before 1.3.19 for Perl create insecure session ids. Apache::Session::Generate::SHA256 generated session ids insecurely. The default session id generator returns a SHA-256 hash of the built-in rand() function, the epoch time, and the PID, that is hashed again. These are predictable, low-entropy sources. Predicable session ids could allow an attacker to gain access to systems. Note that version 1.3.19 has a fallback without warning to use insecure session generation method if the call to Crypt::URandom::urandom fails. However, this is unlikely as Crypt::URandom is a hardcoded requirement of the module. This issue is similar to CVE-2025-40931 for Apache::Session::Generate::MD5.

References

Affected packages

Ubuntu:16.04:LTS
libapache-session-browseable-perl

Package

Name
libapache-session-browseable-perl
Purl
pkg:deb/ubuntu/libapache-session-browseable-perl?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.0.2-2
1.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache-session-browseable-perl",
            "binary_version": "1.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8503.json"
Ubuntu:18.04:LTS
libapache-session-browseable-perl

Package

Name
libapache-session-browseable-perl
Purl
pkg:deb/ubuntu/libapache-session-browseable-perl?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.2.2-1
1.2.8-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache-session-browseable-perl",
            "binary_version": "1.2.8-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8503.json"
Ubuntu:20.04:LTS
libapache-session-browseable-perl

Package

Name
libapache-session-browseable-perl
Purl
pkg:deb/ubuntu/libapache-session-browseable-perl?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.3.2-1
1.3.3-1
1.3.4-1
1.3.5-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache-session-browseable-perl",
            "binary_version": "1.3.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8503.json"
Ubuntu:22.04:LTS
libapache-session-browseable-perl

Package

Name
libapache-session-browseable-perl
Purl
pkg:deb/ubuntu/libapache-session-browseable-perl?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.3.9-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache-session-browseable-perl",
            "binary_version": "1.3.9-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8503.json"
Ubuntu:24.04:LTS
libapache-session-browseable-perl

Package

Name
libapache-session-browseable-perl
Purl
pkg:deb/ubuntu/libapache-session-browseable-perl?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.3.11-3
1.3.13-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache-session-browseable-perl",
            "binary_version": "1.3.13-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8503.json"
Ubuntu:25.10
libapache-session-browseable-perl

Package

Name
libapache-session-browseable-perl
Purl
pkg:deb/ubuntu/libapache-session-browseable-perl?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.3.14-1
1.3.16-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache-session-browseable-perl",
            "binary_version": "1.3.16-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8503.json"
Ubuntu:26.04:LTS
libapache-session-browseable-perl

Package

Name
libapache-session-browseable-perl
Purl
pkg:deb/ubuntu/libapache-session-browseable-perl?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.3.16-1
1.3.18-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libapache-session-browseable-perl",
            "binary_version": "1.3.18-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8503.json"