Open-source package vulnerability · Maven

CVE-2026-42778: Apache MINA vulnerable to Deserialization of Untrusted Data (CVE-2026-41409 Incomplete Fix)

criticalCVSS 3.1 9.8GHSA-995c-6rp3-4m4x

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

Published May 1, 2026 · Updated May 7, 2026

Affected packages

org.apache.mina:mina-core

Ecosystem: Maven
Affected: >= 2.1.0, < 2.1.12
Fixed in: 2.1.12
Check: mvn dependency:tree -Dincludes=org.apache.mina:mina-core

org.apache.mina:mina-core

Ecosystem: Maven
Affected: >= 2.2.0, < 2.2.7
Fixed in: 2.2.7
Check: mvn dependency:tree -Dincludes=org.apache.mina:mina-core

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

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

Affected versions are Apache MINA 2.1.0 <= 2.1.11, and 2.2.0 <= 2.2.6.

The problem is resolved in Apache MINA 2.1.12, and 2.2.7 by applying the classname allowlist earlier.

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

Applications using Apache MINA are advised to upgrade.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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