UBUNTU-CVE-2026-49942

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Source
https://ubuntu.com/security/CVE-2026-49942
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49942.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2026-49942
Upstream
Published
2026-06-04T17:16:00Z
Modified
2026-06-12T09:12:53.851891181Z
Severity
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Net::CIDR::Set versions through 0.20 for Perl did not validate network masks. The mask portion of a network mask could contain Unicode digits such as the Arabic-Indic One (U+0661), or non-digits, which were ignored. This could allow network masks to accept larger networks. Leading zeros were also accepted, but treated as decimal instead of octal. This could lead to confusion about what networks are acceptable.

References

Affected packages

Ubuntu:20.04:LTS / libnet-cidr-set-perl

Package

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

Affected ranges

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

Affected versions

0.*
0.13-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnet-cidr-set-perl",
            "binary_version": "0.13-2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49942.json"

Ubuntu:22.04:LTS / libnet-cidr-set-perl

Package

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

Affected ranges

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

Affected versions

0.*
0.13-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnet-cidr-set-perl",
            "binary_version": "0.13-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49942.json"

Ubuntu:24.04:LTS / libnet-cidr-set-perl

Package

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

Affected ranges

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

Affected versions

0.*
0.13-4
0.13-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.13-5",
            "binary_name": "libnet-cidr-set-perl"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49942.json"

Ubuntu:25.10 / libnet-cidr-set-perl

Package

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

Affected ranges

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

Affected versions

0.*
0.13-5
0.15-1
0.19-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnet-cidr-set-perl",
            "binary_version": "0.19-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49942.json"

Ubuntu:26.04:LTS / libnet-cidr-set-perl

Package

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

Affected ranges

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

Affected versions

0.*
0.19-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "0.19-1",
            "binary_name": "libnet-cidr-set-perl"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-49942.json"