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...

Deserialization Of Untrusted Data

Apache MINA is vulnerable to deserialization of untrusted data. The vulnerability is due to missing class validation in the AbstractIoBuffer.resolveClass method, which bypasses the classname allowlist and allows an attacker to execute arbitrary code via crafted serialized input...

Apache MINA vulnerable to Deserialization of Untrusted Data (CVE-2026-41635 Incomplete Fix)

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...

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...

CVE-2026-42779

CVE-2026-42779 affects Apache MINA’s AbstractIoBuffer.resolveClass(), where one branch bypasses the classname allowlist and permits arbitrary class loading, enabling potential remote code execution via IoBuffer.getObject(). Affected are MINA 2.1.0–2.1.11 and 2.2.0–2.2.6. The issue is fixed by int...

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 filter...

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-2026-41635

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

Summary: CVE-2026-41635 affects Apache MINA’s AbstractIoBuffer.resolveClass(), where one code path for static/primitive types neglects the class check and bypasses the classname allowlist, enabling arbitrary code execution through object deserialization. Impact and scope: Affects MINA versions 2....

PT-2026-35373

Name of the Vulnerable Software and Affected Versions Apache MINA versions 2.0.0 through 2.0.27 Apache MINA versions 2.1.0 through 2.1.10 Apache MINA versions 2.2.0 through 2.2.5 Description A flaw in the resolveClass function of AbstractIoBuffer allows a bypass of the classname allowlist for...