UBUNTU-CVE-2026-54911

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Source
https://ubuntu.com/security/CVE-2026-54911
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-54911
Upstream
  • CVE-2026-54911
Published
2026-06-22T22:16:00Z
Modified
2026-06-24T09:03:12Z
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

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. Prior to 5.13.0, ujson.dumps() (or ujson.dump() or ujson.encode()) have a reject_bytes=False option. When set, they may accept malformed or truncated UTF-8 byte sequences, silently rewriting them into different Unicode characters instead of rejecting them. This leads to input validation bypass and data integrity issues. This vulnerability is fixed in 5.13.0.

References

Affected packages

Ubuntu:14.04:LTS
pandas

Package

Name
pandas
Purl
pkg:deb/ubuntu/pandas?arch=source&distro=trusty

Affected ranges

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

Affected versions

0.*
0.12.0-2ubuntu1
0.13.1-2ubuntu1
0.13.1-2ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-pandas",
            "binary_version": "0.13.1-2ubuntu2"
        },
        {
            "binary_name": "python-pandas-lib",
            "binary_version": "0.13.1-2ubuntu2"
        },
        {
            "binary_name": "python3-pandas",
            "binary_version": "0.13.1-2ubuntu2"
        },
        {
            "binary_name": "python3-pandas-lib",
            "binary_version": "0.13.1-2ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:16.04:LTS
collada2gltf

Package

Name
collada2gltf
Purl
pkg:deb/ubuntu/collada2gltf?arch=source&distro=xenial

Affected ranges

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

Affected versions

Other
20140924-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcollada2gltfconvert-dev",
            "binary_version": "20140924-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
pandas

Package

Name
pandas
Purl
pkg:deb/ubuntu/pandas?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.15.0-2
0.15.0-2ubuntu1
0.15.0-2ubuntu2
0.17.1-3ubuntu2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-pandas",
            "binary_version": "0.17.1-3ubuntu2"
        },
        {
            "binary_name": "python-pandas-lib",
            "binary_version": "0.17.1-3ubuntu2"
        },
        {
            "binary_name": "python3-pandas",
            "binary_version": "0.17.1-3ubuntu2"
        },
        {
            "binary_name": "python3-pandas-lib",
            "binary_version": "0.17.1-3ubuntu2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:18.04:LTS
collada2gltf

Package

Name
collada2gltf
Purl
pkg:deb/ubuntu/collada2gltf?arch=source&distro=bionic

Affected ranges

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

Affected versions

Other
20140924-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcollada2gltfconvert-dev",
            "binary_version": "20140924-4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
pandas

Package

Name
pandas
Purl
pkg:deb/ubuntu/pandas?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*
0.19.2-5.1ubuntu4
0.22.0-2ubuntu1
0.22.0-3
0.22.0-4
0.22.0-4ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-pandas",
            "binary_version": "0.22.0-4ubuntu1"
        },
        {
            "binary_name": "python-pandas-lib",
            "binary_version": "0.22.0-4ubuntu1"
        },
        {
            "binary_name": "python3-pandas",
            "binary_version": "0.22.0-4ubuntu1"
        },
        {
            "binary_name": "python3-pandas-lib",
            "binary_version": "0.22.0-4ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:20.04:LTS
pandas

Package

Name
pandas
Purl
pkg:deb/ubuntu/pandas?arch=source&distro=focal

Affected ranges

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

Affected versions

0.*
0.23.3+dfsg-4ubuntu1
0.23.3+dfsg-4ubuntu5
0.23.3+dfsg-4ubuntu6
0.25.3+dfsg-4
0.25.3+dfsg-4build1
0.25.3+dfsg-7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-pandas",
            "binary_version": "0.25.3+dfsg-7"
        },
        {
            "binary_name": "python3-pandas-lib",
            "binary_version": "0.25.3+dfsg-7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:22.04:LTS
collada2gltf

Package

Name
collada2gltf
Purl
pkg:deb/ubuntu/collada2gltf?arch=source&distro=jammy

Affected ranges

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

Affected versions

Other
20140924-7build1
20140924-8

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libcollada2gltfconvert-dev",
            "binary_version": "20140924-8"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
pandas

Package

Name
pandas
Purl
pkg:deb/ubuntu/pandas?arch=source&distro=jammy

Affected ranges

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

Affected versions

1.*
1.1.5+dfsg-2
1.1.5+dfsg-2ubuntu1
1.3.5+dfsg-2
1.3.5+dfsg-2ubuntu1
1.3.5+dfsg-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-pandas",
            "binary_version": "1.3.5+dfsg-3"
        },
        {
            "binary_name": "python3-pandas-lib",
            "binary_version": "1.3.5+dfsg-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:24.04:LTS
pandas

Package

Name
pandas
Purl
pkg:deb/ubuntu/pandas?arch=source&distro=noble

Affected ranges

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

Affected versions

1.*
1.5.3+dfsg-6
1.5.3+dfsg-6ubuntu1
1.5.3+dfsg-7ubuntu1
1.5.3+dfsg-10
2.*
2.1.4+dfsg-4ubuntu2
2.1.4+dfsg-7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-pandas",
            "binary_version": "2.1.4+dfsg-7"
        },
        {
            "binary_name": "python3-pandas-lib",
            "binary_version": "2.1.4+dfsg-7"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:25.10
pandas

Package

Name
pandas
Purl
pkg:deb/ubuntu/pandas?arch=source&distro=questing

Affected ranges

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

Affected versions

2.*
2.2.3+dfsg-8build1
2.2.3+dfsg-9

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-pandas",
            "binary_version": "2.2.3+dfsg-9"
        },
        {
            "binary_name": "python3-pandas-lib",
            "binary_version": "2.2.3+dfsg-9"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
ujson

Package

Name
ujson
Purl
pkg:deb/ubuntu/ujson?arch=source&distro=questing

Affected ranges

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

Affected versions

5.*
5.10.0-1build2
5.10.0-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-ujson",
            "binary_version": "5.10.0-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:26.04:LTS
pandas

Package

Name
pandas
Purl
pkg:deb/ubuntu/pandas?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.2.3+dfsg-9
2.3.3+dfsg-1ubuntu1
2.3.3+dfsg-3
2.3.3+dfsg-3ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-pandas",
            "binary_version": "2.3.3+dfsg-3ubuntu1"
        },
        {
            "binary_name": "python3-pandas-lib",
            "binary_version": "2.3.3+dfsg-3ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
ujson

Package

Name
ujson
Purl
pkg:deb/ubuntu/ujson?arch=source&distro=resolute

Affected ranges

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

Affected versions

5.*
5.10.0-1build2
5.10.0-1build3
5.11.0-3
5.11.0-3build1
5.11.0-3ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-ujson",
            "binary_version": "5.11.0-3ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:Pro:16.04:LTS
ujson

Package

Name
ujson
Purl
pkg:deb/ubuntu/ujson?arch=source&distro=esm-apps%2Fxenial

Affected ranges

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

Affected versions

1.*
1.33-1
1.33-1build1
1.33-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-ujson",
            "binary_version": "1.33-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "python3-ujson",
            "binary_version": "1.33-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:Pro:18.04:LTS
ujson

Package

Name
ujson
Purl
pkg:deb/ubuntu/ujson?arch=source&distro=esm-apps%2Fbionic

Affected ranges

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

Affected versions

1.*
1.35-1build2
1.35-2
1.35-2ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python-ujson",
            "binary_version": "1.35-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "python3-ujson",
            "binary_version": "1.35-2ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:Pro:20.04:LTS
ujson

Package

Name
ujson
Purl
pkg:deb/ubuntu/ujson?arch=source&distro=esm-apps%2Ffocal

Affected ranges

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

Affected versions

1.*
1.35-3build1
1.35-3build2
1.35-4
1.35-4build1
1.35-4ubuntu0.1
1.35-4ubuntu0.1+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-ujson",
            "binary_version": "1.35-4ubuntu0.1+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:Pro:22.04:LTS
ujson

Package

Name
ujson
Purl
pkg:deb/ubuntu/ujson?arch=source&distro=esm-apps%2Fjammy

Affected ranges

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

Affected versions

4.*
4.0.2-1
4.0.2-1build1
4.2.0-1
5.*
5.1.0-1
5.1.0-1build1
5.1.0-1ubuntu0.1~esm1
5.1.0-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-ujson",
            "binary_version": "5.1.0-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"
Ubuntu:Pro:24.04:LTS
ujson

Package

Name
ujson
Purl
pkg:deb/ubuntu/ujson?arch=source&distro=esm-apps%2Fnoble

Affected ranges

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

Affected versions

5.*
5.8.0-1
5.8.0-1build1
5.9.0-1
5.9.0-1build1
5.9.0-1ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "python3-ujson",
            "binary_version": "5.9.0-1ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-54911.json"