UBUNTU-CVE-2026-31072

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Source
https://ubuntu.com/security/CVE-2026-31072
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31072.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-31072
Upstream
  • CVE-2026-31072
Published
2026-05-19T16:16:00Z
Modified
2026-05-21T19:45:13.206507347Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

The JSONSerializer and CBORSerializer in APScheduler (all versions including 3.10.x and 4.0.0a5) are vulnerable to Remote Code Execution (RCE) via Insecure Deserialization. The unmarshal_object function allows for arbitrary class instantiation and state injection by dynamically importing modules and calling setstate on any class available in the Python environment. An attacker can exploit this by submitting a specially crafted JSON or CBOR payload to an application using these serializers

References

Affected packages

Ubuntu:16.04:LTS
apscheduler

Package

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

Affected ranges

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

Affected versions

2.*
2.1.2-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.1.2-2",
            "binary_name": "python-apscheduler"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31072.json"
Ubuntu:18.04:LTS
apscheduler

Package

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

Affected ranges

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

Affected versions

3.*
3.3.1-1
3.4.0-1
3.4.0-2ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.4.0-2ubuntu1",
            "binary_name": "python-apscheduler"
        },
        {
            "binary_version": "3.4.0-2ubuntu1",
            "binary_name": "python3-apscheduler"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31072.json"
Ubuntu:20.04:LTS
apscheduler

Package

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

Affected ranges

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

Affected versions

3.*
3.5.3-1
3.6.1-1.1
3.6.3-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.6.3-1",
            "binary_name": "python3-apscheduler"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31072.json"
Ubuntu:22.04:LTS
apscheduler

Package

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

Affected ranges

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

Affected versions

3.*
3.7.0-1
3.8.0-1
3.8.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.8.1-1",
            "binary_name": "python3-apscheduler"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31072.json"
Ubuntu:24.04:LTS
apscheduler

Package

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

Affected ranges

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

Affected versions

3.*
3.9.1-2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.9.1-2",
            "binary_name": "python3-apscheduler"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31072.json"
Ubuntu:25.10
apscheduler

Package

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

Affected ranges

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

Affected versions

3.*
3.11.0-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.11.0-1",
            "binary_name": "python3-apscheduler"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31072.json"
Ubuntu:26.04:LTS
apscheduler

Package

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

Affected ranges

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

Affected versions

3.*
3.11.0-1
3.11.1-1
3.11.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.11.2-1",
            "binary_name": "python3-apscheduler"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-31072.json"