# CVE-2026-41409: mina2: The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete

CVE-2026-41409 is fixed in mina2 on 1 platform by DEBIAN-CVE-2026-41409 (version 2.2.9-1), released April 27, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-41409
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0043
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 27, 2026

## 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

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | mina2 Debian 14 | 2.2.9-1 | [DEBIAN-CVE-2026-41409](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41409.md) | Apr 27, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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