CVE-2026-47065
Apache MINA: Critical Deserialization Allow-list Bypass via resolveProxyClass - ZDRES-232
Description
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.
INFO
Published Date :
June 3, 2026, 11:16 a.m.
Last Modified :
July 22, 2026, 7:10 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | f0158376-9dc2-43b6-827c-5f631a4d8d09 | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update to the latest version.
- Apply vendor patches.
- Review application class loading.
- Verify acceptMatchers configuration.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-47065.
| URL | Resource |
|---|---|
| https://lists.apache.org/thread/y7xj1bl8qo47p9bktb11hg5v6k1d4dyj | Mailing List Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-47065 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-47065
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-47065 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-47065 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Translated by [email protected]
Jul. 22, 2026
Action Type Old Value New Value Added Translation Title: Apache MINA de Apache Software Foundation, Description: ZDRES-232: resolveProxyClass no anulado - Omisión del filtro acceptMatchers mediante java.lang.reflect.Proxy Evaluación: Completamente abordado. Cuando el flujo serializado contiene un TC_PROXYCLASSDESC (el marcador para un java.lang.reflect.Proxy), se despacha ObjectInputStream.readProxyDesc() del JDK. El JDK luego llama a la implementación predeterminada de ObjectInputStream.resolveProxyClass(interfaces), que realiza Class.forName(intf, false, latestUserDefinedLoader()) para CADA nombre de interfaz y construye la clase proxy, omitiendo la lista de clases aceptadas. ZDRES-233: Class.forName(name, initialize=true, classLoader) en readClassDescriptor activa el inicializador estático de clases en la lista de permitidos Evaluación: Completamente abordado. Para CUALQUIER clase en la lista de permitidos, la deserialización de un flujo que la nombra activa el (inicializador estático) de la clase ANTES de que se construya cualquier instancia. Esto significa que un atacante que proporciona un nombre de clase en la lista de permitidos (por ejemplo, el desarrollador escribió accept('com.myapp.*'), el atacante proporciona com.myapp.SomeClass) causa <clinit> de SomeClass, y muchas clases del mundo real tienen inicializadores estáticos con efectos secundarios. Ambos problemas han sido solucionados. -
Initial Analysis by [email protected]
Jun. 30, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:apache:mina:2.0.29:*:*:*:*:*:*:* *cpe:2.3:a:apache:mina:2.1.13:*:*:*:*:*:*:* *cpe:2.3:a:apache:mina:2.2.8:*:*:*:*:*:*:* Added Reference Type Apache Software Foundation: https://lists.apache.org/thread/y7xj1bl8qo47p9bktb11hg5v6k1d4dyj Types: Mailing List, Vendor Advisory -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache MINA', 'versions': [{'status': 'affected', 'version': '2.2.0', 'lessThan': '2.2.8', 'versionType': 'semver'}, {'status': 'affected', 'version': '2.1.0', 'lessThan': '2.1.13', 'versionType': 'semver'}, {'status': 'affected', 'version': '2.0.0', 'lessThan': '2.0.29', 'versionType': 'semver'}], 'packageName': 'org.apache.mina:mina-core', 'collectionURL': 'https://repo.maven.apache.org/maven2/org/apache/mina', 'defaultStatus': 'unaffected'}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-47065', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-03T00:00:00+00:00'} -
New CVE Received by [email protected]
Jun. 03, 2026
Action Type Old Value New Value Added Description 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-502 Added Reference https://lists.apache.org/thread/y7xj1bl8qo47p9bktb11hg5v6k1d4dyj