UBUNTU-CVE-2026-47065

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2026-47065
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47065.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-47065
Upstream
  • CVE-2026-47065
Published
2026-06-03T11:16:00Z
Modified
2026-06-18T22:00:23.837989969Z
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

ZDRES-232: resolveProxyClass Not Overridden - acceptMatchers Filter Bypass via java.lang.reflect.Proxy Assessment: Fully addressed. When the serialised stream contains a TC_PROXYCLASSDESC (the marker for a java.lang.reflect.Proxy ), JDK’s ObjectInputStream.readProxyDesc() is dispatched. JDK then calls the default ObjectInputStream.resolveProxyClass(interfaces) implementation, which performs Class.forName(intf, false, latestUserDefinedLoader()) for EACH interface name and constructs the proxy class — bypassing the accepted classes list . ZDRES-233: Class.forName(name, initialize=true, classLoader) in readClassDescriptor Triggers Static Initialiser of Allow-Listed Classes Assessment: Fully addressed. For ANY class on the allow-list, deserialising a stream that names it triggers the class’s (static initialiser) BEFORE any instance is constructed. This means an attacker who supplies a class name on the allow-list (e.g., the developer wrote accept(“com.myapp.*") , attacker supplies com.myapp.SomeClass ) causes <clinit> of SomeClass — and many real-world classes have side-effecting static initialisers Both issues have been fixed.

References

Affected packages

Ubuntu:22.04:LTS / mina2

Package

Name
mina2
Purl
pkg:deb/ubuntu/mina2?arch=source&distro=jammy

Affected ranges

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

Affected versions

2.*
2.1.4-2
2.1.5-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.1.5-1",
            "binary_name": "libmina2-java"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47065.json"

Ubuntu:24.04:LTS / mina2

Package

Name
mina2
Purl
pkg:deb/ubuntu/mina2?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.2.1-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.2.1-3",
            "binary_name": "libmina2-java"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47065.json"

Ubuntu:25.10 / mina2

Package

Name
mina2
Purl
pkg:deb/ubuntu/mina2?arch=source&distro=questing

Affected ranges

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

Affected versions

2.*
2.2.1-3
2.2.1-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.2.1-4",
            "binary_name": "libmina2-java"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47065.json"

Ubuntu:26.04:LTS / mina2

Package

Name
mina2
Purl
pkg:deb/ubuntu/mina2?arch=source&distro=resolute

Affected ranges

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

Affected versions

2.*
2.2.1-4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.2.1-4",
            "binary_name": "libmina2-java"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-47065.json"