UBUNTU-CVE-2026-19954

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Source
https://ubuntu.com/security/CVE-2026-19954
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19954.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-19954
Upstream
  • CVE-2026-19954
Published
2026-10-05T07:16:00Z
Modified
2026-10-17T12:58:46Z
Severity
  • 5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Net::Whois::Raw versions before 2.99044 for Perl ship a pwhois command-line tool that queries WHOIS for the wrong domain for unicode domain names. pwhois encodes each non-ASCII label directly using Net::IDN::Punycode and prepends xn--. Apart from lowercasing ASCII and Cyrillic letters, it skips the IDNA mapping and normalization steps, so a label with other uppercase letters, or not in NFC, encodes to a different A-label than its IDNA form. For example, a label of U+00C9 followed by "cole" encodes to "xn--cole-pka" rather than "xn--cole-9oa". The Net::Whois::Raw library modules are not affected.

References

Affected packages

Ubuntu:16.04:LTS
libnet-whois-raw-perl

Package

Name
libnet-whois-raw-perl
Purl
pkg:deb/ubuntu/libnet-whois-raw-perl?arch=source&distro=xenial

Affected ranges

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

Affected versions

2.*
2.43-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnet-whois-raw-perl",
            "binary_version":  "2.43-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19954.json"
Ubuntu:18.04:LTS
libnet-whois-raw-perl

Package

Name
libnet-whois-raw-perl
Purl
pkg:deb/ubuntu/libnet-whois-raw-perl?arch=source&distro=bionic

Affected ranges

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

Affected versions

2.*
2.43-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnet-whois-raw-perl",
            "binary_version":  "2.43-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19954.json"
Ubuntu:20.04:LTS
libnet-whois-raw-perl

Package

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

Affected ranges

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

Affected versions

2.*
2.43-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnet-whois-raw-perl",
            "binary_version":  "2.43-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19954.json"
Ubuntu:22.04:LTS
libnet-whois-raw-perl

Package

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

Affected ranges

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

Affected versions

2.*
2.43-1.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnet-whois-raw-perl",
            "binary_version":  "2.43-1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19954.json"
Ubuntu:24.04:LTS
libnet-whois-raw-perl

Package

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

Affected ranges

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

Affected versions

2.*
2.43-1.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnet-whois-raw-perl",
            "binary_version":  "2.43-1.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19954.json"
Ubuntu:26.04:LTS
libnet-whois-raw-perl

Package

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

Affected ranges

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

Affected versions

2.*
2.43-1.1
2.99042-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnet-whois-raw-perl",
            "binary_version":  "2.99042-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19954.json"
Ubuntu:26.10
libnet-whois-raw-perl

Package

Name
libnet-whois-raw-perl
Purl
pkg:deb/ubuntu/libnet-whois-raw-perl?arch=source&distro=stonking

Affected ranges

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

Affected versions

2.*
2.99042-1
2.99043-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libnet-whois-raw-perl",
            "binary_version":  "2.99043-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19954.json"