## Incomplete Deserialization Fix Leaves Apache MINA Vulnerable to Code Execution via Static Initializer Timing Gap
A critical vulnerability in Apache MINA has been identified where a previous security fix was applied incompletely, leaving a window for potential remote code execution. The issue centers on CVE-2024-52046's remediation in the AbstractIoBuffer.getObject() method, where the classname allowlist designed to restrict deserialization was enforced too late in the process. Specifically, static initializers within a class being deserialized could execute before the allowlist check occurred, effectively bypassing the intended security control.

The vulnerability affects Apache MINA versions 2.0.0 through 2.0.27, 2.1.0 through 2.1.10, and 2.2.0 through 2.2.5. Applications that call IoBuffer.getObject() are directly exposed to this flaw. The Apache MINA project has addressed the issue by moving the classname allowlist enforcement earlier in the deserialization workflow, with corrected versions released as 2.0.28, 2.1.11, and 2.2.6. The vulnerability is classified under CWE-502 (Deserialization of Untrusted Data), indicating the core risk stems from processing untrusted serialized data without adequate validation.

Organizations leveraging Apache MINA in their applications are advised to audit their use of IoBuffer.getObject() and prioritize upgrading to the patched releases. The incomplete nature of the prior fix underscores the complexity of securing deserialization pathways, where timing and initialization order can undermine seemingly comprehensive safeguards. Until patches are applied, exposure remains for adversaries capable of crafting malicious serialized payloads targeting MINA-based services.
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- **Source**: GitHub Issues
- **Sector**: The Lab
- **Tags**: apache-mina, CVE-2026-41409, deserialization, CWE-502, vulnerability
- **Credibility**: unverified
- **Published**: 2026-04-29 03:54:09
- **ID**: 78065
- **URL**: https://whisperx.ai/en/intel/78065