CVE-2026-41635: CWE-502 Deserialization of Untrusted Data in Apache Software Foundation Apache MINA
Apache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed. The fix checks if the class is present in the accepted class filter before calling Class.forName(). 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.
AI Analysis
Technical Summary
Apache MINA contains a deserialization vulnerability (CWE-502) in the AbstractIoBuffer.resolveClass() method where one branch handling static classes or primitive types does not enforce the classname allowlist, allowing arbitrary code execution. This affects multiple versions of Apache MINA up to 2.0.27, 2.1.10, and 2.2.5. The vulnerability is exploitable when applications call IoBuffer.getObject(). The issue is resolved in Apache MINA 2.0.28, 2.1.11, and 2.2.6 by enforcing the classname allowlist earlier before invoking Class.forName().
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code remotely without authentication, leading to full confidentiality, integrity, and availability compromise of affected systems. The CVSS score is 9.8 (critical), indicating a high likelihood of remote exploitation with severe impact.
Mitigation Recommendations
A fix is available by upgrading Apache MINA to versions 2.0.28, 2.1.11, or 2.2.6 or later. Users of affected versions should upgrade promptly. No vendor advisory is provided in the input, but the description explicitly states the fixed versions. Until upgraded, applications using IoBuffer.getObject() are vulnerable.
CVE-2026-41635: CWE-502 Deserialization of Untrusted Data in Apache Software Foundation Apache MINA
Description
Apache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed. The fix checks if the class is present in the accepted class filter before calling Class.forName(). 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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Apache MINA contains a deserialization vulnerability (CWE-502) in the AbstractIoBuffer.resolveClass() method where one branch handling static classes or primitive types does not enforce the classname allowlist, allowing arbitrary code execution. This affects multiple versions of Apache MINA up to 2.0.27, 2.1.10, and 2.2.5. The vulnerability is exploitable when applications call IoBuffer.getObject(). The issue is resolved in Apache MINA 2.0.28, 2.1.11, and 2.2.6 by enforcing the classname allowlist earlier before invoking Class.forName().
Potential Impact
Successful exploitation allows an attacker to execute arbitrary code remotely without authentication, leading to full confidentiality, integrity, and availability compromise of affected systems. The CVSS score is 9.8 (critical), indicating a high likelihood of remote exploitation with severe impact.
Mitigation Recommendations
A fix is available by upgrading Apache MINA to versions 2.0.28, 2.1.11, or 2.2.6 or later. Users of affected versions should upgrade promptly. No vendor advisory is provided in the input, but the description explicitly states the fixed versions. Until upgraded, applications using IoBuffer.getObject() are vulnerable.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- apache
- Date Reserved
- 2026-04-21T22:18:22.755Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69ef291bba26a39fba10e188
Added to database: 4/27/2026, 9:15:07 AM
Last enriched: 4/27/2026, 9:30:35 AM
Last updated: 4/28/2026, 2:49:04 AM
Views: 11
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