UBUNTU-CVE-2026-116486

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Source
https://ubuntu.com/security/CVE-2026-116486
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116486.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-116486
Upstream
Published
2026-10-26T14:16:00Z
Modified
2026-10-28T20:17:33Z
Severity
  • 4.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • 4.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
  • 2.0 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • 2.0 (Low) CVSS_V4 - CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Objenesis before 3.6 contains a type confusion vulnerability that allows code in one class loader to substitute objects into another by exploiting instantiator caching keyed on class name. When a shared ObjenesisStd instance caches instantiators by clazz.getName() in ObjenesisBase.getInstantiatorOf(), same-named classes collide, causing newInstance() to return wrong-class objects and ClassCastException failures.

References

Affected packages

Ubuntu:14.04:LTS
objenesis

Package

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

Affected ranges

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

Affected versions

1.*
1.2+full-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libobjenesis-java",
            "binary_version":  "1.2+full-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116486.json"
Ubuntu:16.04:LTS
objenesis

Package

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

Affected ranges

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

Affected versions

2.*
2.1-2
2.2-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libobjenesis-java",
            "binary_version":  "2.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116486.json"
Ubuntu:18.04:LTS
objenesis

Package

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

Affected ranges

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

Affected versions

2.*
2.6-1
3.*
3.0.1-2~18.04

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libobjenesis-java",
            "binary_version":  "3.0.1-2~18.04"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116486.json"
Ubuntu:20.04:LTS
objenesis

Package

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

Affected ranges

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

Affected versions

3.*
3.0.1-2
3.1-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libobjenesis-java",
            "binary_version":  "3.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116486.json"
Ubuntu:22.04:LTS
objenesis

Package

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

Affected ranges

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

Affected versions

3.*
3.1-1
3.2-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libobjenesis-java",
            "binary_version":  "3.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116486.json"
Ubuntu:24.04:LTS
objenesis

Package

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

Affected ranges

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

Affected versions

3.*
3.3-3

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libobjenesis-java",
            "binary_version":  "3.3-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116486.json"
Ubuntu:26.04:LTS
objenesis

Package

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

Affected ranges

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

Affected versions

3.*
3.4-2
3.4-2build1
3.5-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libobjenesis-java",
            "binary_version":  "3.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116486.json"
Ubuntu:26.10
objenesis

Package

Name
objenesis
Purl
pkg:deb/ubuntu/objenesis?arch=source&distro=stonking

Affected ranges

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

Affected versions

3.*
3.5-1

Ecosystem specific 

{
    "binaries":  [
        {
            "binary_name":  "libobjenesis-java",
            "binary_version":  "3.5-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-116486.json"