PT-2026-35373 · Apache · Apache Mina

Published 2026-04-27 · Updated 2026-04-27 · CVE-2026-41635

NVD

CVSS v3.1

9.8

Critical

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2026-41635

Affected Products

Apache Mina

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-41635 · Security Note
• https://lists.apache.org/thread/1l91w1mqsb3lwfd504fs045ylxntt2tm · Vendor Advisory