Apache MINA: Apache MINA: Arbitrary code execution via classname allowlist bypass

A flaw was found in Apache MINA. A remote attacker could exploit a vulnerability in the AbstractIoBuffer.resolveClass method, which failed to properly validate class names for static classes or primitive types. This bypasses the intended security control, known as a classname allowlist, allowing ...

CVE-2026-42778

A flaw was found in Apache MINA. An incomplete fix for a deserialization issue in the AbstractIoBuffer.getObject method allowed a static initializer in a class to be executed before the classname allowlist was applied. This vulnerability allows a remote attacker to execute arbitrary code in...

Unsafe Deserialization

Apache MINA is vulnerable to Unsafe Deserialization. The vulnerability is due to incomplete enforcement of a classname allowlist in AbstractIoBuffer.resolveClass, where certain branches e.g., for primitive or static classes bypass validation and call Class.forName without checks, allowing attacke...

OESA-2026-2168 apache-mina security update

Apache MINA is a network application framework which helps users develop high performance and high scalability network applications easily. It provides an abstract event-driven asynchronous API over various transports such as TCP/IP and UDP/IP via Java NIO. Security Fixes: The fix for...

OESA-2026-2167 apache-mina security update

Apache MINA is a network application framework which helps users develop high performance and high scalability network applications easily. It provides an abstract event-driven asynchronous API over various transports such as TCP/IP and UDP/IP via Java NIO. Security Fixes: The fix for...

CVE-2026-41409

A flaw was found in Apache MINA. An incomplete fix for a deserialization vulnerability in the AbstractIoBuffer.getObject method allowed a static initializer in a class to be executed before the classname allowlist was applied. This could enable a remote attacker to execute arbitrary code by sendi...

Deserialization of Untrusted Data

Overview org.apache.mina:mina-core is a network application framework which helps users develop high performance and high scalability network applications easily. Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the IoBuffer.getObject function. An attacker...

CVE-2026-42778

The fix for CVE-2026-41409 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a stat...

CVE-2026-42779

The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: Apache MINA's AbstractIoBuffer.resolveClass contains two branches, one of them for static classes or primitive types does not check the class at all, bypassing the classname...

EUVD-2026-26492

The fix for CVE-2026-41409 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a stat...

CVE-2026-42778

The fix for CVE-2026-41409 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a stat...

EUVD-2026-26493

The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: Apache MINA's AbstractIoBuffer.resolveClass contains two branches, one of them for static classes or primitive types does not check the class at all, bypassing the classname...

PT-2026-36315

Name of the Vulnerable Software and Affected Versions Apache MINA versions 2.1.0 through 2.1.11 Apache MINA versions 2.2.0 through 2.2.6 Description An insecure deserialization flaw exists in the resolveClass function of AbstractIoBuffer. One of the execution branches, specifically for primitive...

CVE-2026-41635

A flaw was found in Apache MINA. A remote attacker could exploit a vulnerability in the AbstractIoBuffer.resolveClass method, which failed to properly validate class names for static classes or primitive types. This bypasses the intended security control, known as a classname allowlist, allowing ...

CVE-2026-41409

The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed. Affected versions are Apache MINA 2.0.0 =...

CVE-2026-41635

Apache MINA's AbstractIoBuffer.resolveClass contains two branches, one of them for static classes or primitive types does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed. The fix checks if the class is present in the accepted class...

DEBIAN-CVE-2026-41635

Apache MINA's AbstractIoBuffer.resolveClass contains two branches, one of them for static classes or primitive types does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed. The fix checks if the class is present in the accepted class...

CVE-2026-41635 Apache MINA: AbstractIoBuffer.resolveClass() null-clazz Branch Skips acceptMatchers Filter — Full Object Deserialization RCE

Apache MINA's AbstractIoBuffer.resolveClass contains two branches, one of them for static classes or primitive types does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed. The fix checks if the class is present in the accepted class...

CVE-2026-40473

The camel-mina component's MinaConverter.toObjectInputIoBuffer type converter wraps an IoBuffer in a java.io.ObjectInputStream without applying any ObjectInputFilter or class-loading restrictions. When a Camel route uses camel-mina as a TCP or UDP consumer and requests conversion to ObjectInput f...

PT-2026-35371

The camel-mina component's MinaConverter.toObjectInputIoBuffer type converter wraps an IoBuffer in a java.io.ObjectInputStream without applying any ObjectInputFilter or class-loading restrictions. When a Camel route uses camel-mina as a TCP or UDP consumer and requests conversion to ObjectInput f...