UBUNTU-CVE-2026-110674

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Source
https://ubuntu.com/security/CVE-2026-110674
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110674.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-110674
Upstream
Published
2026-10-19T19:17:00Z
Modified
2026-10-28T20:17:41Z
Severity
  • Ubuntu - medium
Summary
[none]
Details

Cpanel::JSON::XS versions from 4.33 before 4.80 for Perl miss duplicate non-ASCII bare keys, allowing type confusion under dupkeys_as_arrayref in decode_hv. With allow_barekey, which relaxed enables, a bare key containing a non-ASCII byte is stored as UTF-8 but looked up as raw bytes, so a repeated key escapes the duplicate-key check and replaces the earlier value. From 4.41, under dupkeys_as_arrayref, a bare repeat replaces the array that collects a key's values with a plain value, and the next quoted repeat pushes onto that value as if it were an array. A JSON integer there is dereferenced as a pointer. Untrusted JSON decoded with relaxed and dupkeys_as_arrayref can crash the process or dereference an address chosen by a JSON number.

References

Affected packages

Ubuntu:16.04:LTS
libcpanel-json-xs-perl

Package

Name
libcpanel-json-xs-perl
Purl
pkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=xenial

Affected ranges

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

Affected versions

3.*
3.0115-1
3.0210-1ubuntu1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libcpanel-json-xs-perl",
            "binary_version":  "3.0210-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110674.json"
Ubuntu:18.04:LTS
libcpanel-json-xs-perl

Package

Name
libcpanel-json-xs-perl
Purl
pkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=bionic

Affected ranges

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

Affected versions

3.*
3.0225-1build1
3.0239-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libcpanel-json-xs-perl",
            "binary_version":  "3.0239-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110674.json"
Ubuntu:20.04:LTS
libcpanel-json-xs-perl

Package

Name
libcpanel-json-xs-perl
Purl
pkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=focal

Affected ranges

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

Affected versions

4.*
4.12-1
4.12-1build1
4.15-1
4.17-1
4.18-1
4.19-1
4.19-1build1
4.19-1ubuntu0.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libcpanel-json-xs-perl",
            "binary_version":  "4.19-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110674.json"
Ubuntu:22.04:LTS
libcpanel-json-xs-perl

Package

Name
libcpanel-json-xs-perl
Purl
pkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=jammy

Affected ranges

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

Affected versions

4.*
4.25-1build1
4.25-1build2
4.27-1
4.27-1build1
4.27-1ubuntu0.1
4.27-1ubuntu0.2

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libcpanel-json-xs-perl",
            "binary_version":  "4.27-1ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110674.json"
Ubuntu:24.04:LTS
libcpanel-json-xs-perl

Package

Name
libcpanel-json-xs-perl
Purl
pkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=noble

Affected ranges

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

Affected versions

4.*
4.37-1
4.37-1build1
4.37-1build2
4.37-1build3
4.37-1ubuntu0.1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libcpanel-json-xs-perl",
            "binary_version":  "4.37-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110674.json"
Ubuntu:26.04:LTS
libcpanel-json-xs-perl

Package

Name
libcpanel-json-xs-perl
Purl
pkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=resolute

Affected ranges

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

Affected versions

4.*
4.39-2
4.40-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libcpanel-json-xs-perl",
            "binary_version":  "4.40-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110674.json"
Ubuntu:26.10
libcpanel-json-xs-perl

Package

Name
libcpanel-json-xs-perl
Purl
pkg:deb/ubuntu/libcpanel-json-xs-perl?arch=source&distro=stonking

Affected ranges

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

Affected versions

4.*
4.40-1
4.42-1
4.42-1build1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libcpanel-json-xs-perl",
            "binary_version":  "4.42-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-110674.json"