CVE-2026-41635 Details
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.
A remote code execution vulnerability exists in Apache MINA's AbstractIoBuffer.resolveClass() method. This issue arises in versions 2.0.0 prior to 2.0.27, 2.1.0 prior to 2.1.10, and 2.2.0 prior to 2.2.5. The vulnerability is triggered when the method processes static classes or primitive types, as it bypasses the classname allowlist, allowing arbitrary code execution. The flaw affects applications that use Apache MINA and call IoBuffer.getObject().
Users are advised to upgrade to Apache MINA versions 2.0.28, 2.1.11, or 2.2.6, where this vulnerability has been addressed by applying the classname allowlist check earlier in the process.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 27, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| http://www.openwall.com/lists/oss-security/2026/04/27/4 | CVE | Mailing ListThird Party Advisory |
| https://lists.apache.org/thread/1l91w1mqsb3lwfd504fs045ylxntt2tm | [email protected] | Mailing ListVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-502 | Deserialization of Untrusted Data | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| apache mina | >= 2.0.0, < 2.0.28 >= 2.1.0, < 2.1.11 >= 2.2.0, < 2.2.6 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 29, 2026 | Initial Analysis | [email protected] |
| Apr 27, 2026 | CVE Modified | CVE |
| Apr 27, 2026 | New CVE Received | [email protected] |