CVE-2026-41409
Received Received - Intake
Deserialization Flaw in Apache MINA IoBuffer Causes Security Risk

Publication date: 2026-04-27

Last updated on: 2026-04-29

Assigner: Apache Software Foundation

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. Affected versions are Apache MINA 2.0.0 <= 2.0.27, 2.1.0 <= 2.1.10, and 2.2.0 <= 2.2.5. The problem is resolved in Apache MINA 2.0.28, 2.1.11, and 2.2.6 by applying the classname allowlist earlier. Affected are applications using Apache MINA that call IoBuffer.getObject(). Applications using Apache MINA are advised to upgrade
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Meta Information
Published
2026-04-27
Last Modified
2026-04-29
Generated
2026-06-16
AI Q&A
2026-04-27
EPSS Evaluated
2026-06-15
NVD
CVE-2026-41409
EUVD
EUVD-2026-25809
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
apache mina From 2.0.0 (inc) to 2.0.28 (exc)
apache mina From 2.1.0 (inc) to 2.1.11 (exc)
apache mina From 2.2.0 (inc) to 2.2.6 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-502 The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
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Executive Summary

This vulnerability is related to Apache MINA's AbstractIoBuffer.getObject() method. The fix for a previous vulnerability (CVE-2024-52046) was incomplete because the classname allowlist, which restricts which classes can be deserialized, was applied too late. This means that a static initializer in a class to be deserialized might have already executed before the allowlist was enforced, potentially allowing unsafe deserialization.

Affected versions include Apache MINA 2.0.0 through 2.0.27, 2.1.0 through 2.1.10, and 2.2.0 through 2.2.5. The issue is fixed in versions 2.0.28, 2.1.11, and 2.2.6 by applying the classname allowlist earlier in the deserialization process.

Impact Analysis

This vulnerability can have a severe impact because it allows potentially unsafe deserialization of classes in Apache MINA applications that use IoBuffer.getObject().

  • An attacker could exploit this to execute arbitrary code remotely.
  • It can lead to full compromise of the affected system, including confidentiality, integrity, and availability.

The CVSS v3.1 base score is 9.8, indicating a critical severity with network attack vector, low attack complexity, no privileges required, no user interaction, and high impact on confidentiality, integrity, and availability.

Mitigation Strategies

To mitigate this vulnerability, applications using Apache MINA that call IoBuffer.getObject() should upgrade to fixed versions where the issue is resolved.

  • Upgrade Apache MINA to version 2.0.28 or later if using the 2.0.x branch.
  • Upgrade Apache MINA to version 2.1.11 or later if using the 2.1.x branch.
  • Upgrade Apache MINA to version 2.2.6 or later if using the 2.2.x branch.
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