CVE-2026-41409: Apache Mina

Critical severity, CVSS 9.8. EPSS: 0.8% chance of exploitation in the next 30 days.

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

Affected products

• Apache Mina: from 2.0.0, before 2.0.28 (fixed in 2.0.28); from 2.1.0, before 2.1.11 (fixed in 2.1.11); from 2.2.0, before 2.2.6 (fixed in 2.2.6)

Published 2026-04-27. Last modified 2026-06-17.