Arbitrary Code Execution Vulnerability in Apache MINA by The Apache Software Foundation
CVE-2026-41635

9.8CRITICAL

Key Information:

Vendor

Apache
Status
Apache Mina
Vendor
CVE Published:
27 April 2026

What is CVE-2026-41635?

The vulnerability in Apache MINA's AbstractIoBuffer.resolveClass() allows arbitrary code execution due to a flaw that bypasses the class allowlist for certain branches, particularly for static classes or primitive types. This can result in unauthorized access and manipulation of application behavior. The issue is remedied in newer versions of Apache MINA, which implement necessary checks to enforce the classname allowlist earlier in the execution process, enhancing application security. Users operating on affected versions are strongly urged to upgrade to versions 2.0.28, 2.1.11, or 2.2.6 to mitigate potential risks.

Affected Version(s)

Apache MINA 2.2.0 <= 2.2.5

Apache MINA 2.1.0 <= 2.1.10

Apache MINA 2.0.0 <= 2.0.27

References

https://lists.apache.org/thread/1l91w1mqsb3lwfd504fs045yl...
vendor-advisory

CVSS V3.1

Score:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Venkatraman Kumar, Securin
.