oss-security - CVE-2026-41409: Apache MINA: CWE-502 Deserialization of Untrusted Data

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Message-ID: <912321c8-ae03-afca-b30f-b2079228b46c@apache.org>
Date: Mon, 27 Apr 2026 08:23:36 +0000
From: Emmanuel Lécharny <elecharny@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2026-41409: Apache MINA: CWE-502 Deserialization of Untrusted
 Data 

Severity: 

Affected versions:

- Apache MINA (org.apache.mina:mina.core) 2.2.0 through 2.2.5
- Apache MINA (org.apache.mina:mina.core) 2.1.0 through 2.1.10
- Apache MINA (org.apache.mina:mina.core) 2.0.0 through 2.0.27

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 static initializer in a class to be read might already have been executed.
<br>

<br>
Affected versions are Apache MINA 2.0.0 &lt;= 2.0.27, 2.1.0 &lt;= 2.1.10, and 2.2.0 &lt;= 2.2.5.
<br>

<br>
The problem is resolved in Apache MINA 2.0.28, 2.1.11, and 2.2.6 by 
applying the classname allowlist earlier.
<br>

<br>
Affected are applications using Apache MINA that call IoBuffer.getObject().
<br>

<br>
Applications using Apache MINA are advised to upgrade.<br>

Credit:

Venkatraman Kumar, Securin (reporter)

References:

https://mina.apache.org/
https://www.cve.org/CVERecord?id=CVE-2026-41409

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