UBUNTU-CVE-2026-45191

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Source
https://ubuntu.com/security/CVE-2026-45191
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45191.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-45191
Upstream
  • CVE-2026-45191
Downstream
Related
Published
2026-06-15T00:00:00Z
Modified
2026-06-24T11:01:43.160375410Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Net::CIDR::Lite versions before 0.24 for Perl does not properly consider extraneous zero characters in CIDR mask values, which may allow IP ACL bypass. Mask forms like "/00" and "/01" pass validation and parse to the same prefix as their unpadded value. See also CVE-2026-45190.

References

Affected packages

Ubuntu:22.04:LTS
libnet-cidr-lite-perl

Package

Name
libnet-cidr-lite-perl
Purl
pkg:deb/ubuntu/libnet-cidr-lite-perl?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.22-1ubuntu0.2

Affected versions

0.*
0.22-1
0.22-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.22-1ubuntu0.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45191.json"
Ubuntu:24.04:LTS
libnet-cidr-lite-perl

Package

Name
libnet-cidr-lite-perl
Purl
pkg:deb/ubuntu/libnet-cidr-lite-perl?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.22-2ubuntu0.24.04.2

Affected versions

0.*
0.22-2
0.22-2ubuntu0.24.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.22-2ubuntu0.24.04.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45191.json"
Ubuntu:25.10
libnet-cidr-lite-perl

Package

Name
libnet-cidr-lite-perl
Purl
pkg:deb/ubuntu/libnet-cidr-lite-perl?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.22-2ubuntu0.25.10.2

Affected versions

0.*
0.22-2
0.22-2ubuntu0.25.10.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.22-2ubuntu0.25.10.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45191.json"
Ubuntu:26.04:LTS
libnet-cidr-lite-perl

Package

Name
libnet-cidr-lite-perl
Purl
pkg:deb/ubuntu/libnet-cidr-lite-perl?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.22-2ubuntu0.26.04.2

Affected versions

0.*
0.22-2
0.22-2ubuntu0.26.04.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.22-2ubuntu0.26.04.2"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45191.json"
Ubuntu:Pro:16.04:LTS
libnet-cidr-lite-perl

Package

Name
libnet-cidr-lite-perl
Purl
pkg:deb/ubuntu/libnet-cidr-lite-perl?arch=source&distro=esm-apps-legacy%2Fxenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.21-1ubuntu0.16.04.1~esm2

Affected versions

0.*
0.21-1
0.21-1ubuntu0.16.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.21-1ubuntu0.16.04.1~esm2"
        }
    ],
    "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45191.json"
Ubuntu:Pro:18.04:LTS
libnet-cidr-lite-perl

Package

Name
libnet-cidr-lite-perl
Purl
pkg:deb/ubuntu/libnet-cidr-lite-perl?arch=source&distro=esm-infra%2Fbionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.21-1ubuntu0.18.04.1~esm2

Affected versions

0.*
0.21-1
0.21-1ubuntu0.18.04.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.21-1ubuntu0.18.04.1~esm2"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45191.json"
Ubuntu:Pro:20.04:LTS
libnet-cidr-lite-perl

Package

Name
libnet-cidr-lite-perl
Purl
pkg:deb/ubuntu/libnet-cidr-lite-perl?arch=source&distro=esm-infra%2Ffocal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.21-2ubuntu0.1+esm2

Affected versions

0.*
0.21-2
0.21-2ubuntu0.1
0.21-2ubuntu0.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnet-cidr-lite-perl",
            "binary_version": "0.21-2ubuntu0.1+esm2"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-45191.json"