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Critical

Apache MINA vulnerable to Deserialization of Untrusted Data

  • Disclosed: 27.04.2026
  • Updated: 11.10.2026 13:20

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.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) org.apache.mina:mina-core >= 2.0.0, < 2.0.28, >= 2.1.0, < 2.1.11, >= 2.2.0, < 2.2.6 2.0.28, 2.1.11, 2.2.6

References

CVSS score 9.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-502
Platform
Java / Kotlin (Maven)
Package
org.apache.mina:mina-core
Disclosed
27.04.2026
Updated
11.10.2026 13:20

Sources and licenses

OSV / GitHub Advisory Database - GHSA-8297-v2rf-2p32 - CC BY 4.0

Vulnerability history: org.apache.mina:mina-core

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
8
First → latest
11.2021 06.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 6
  • High 1
  • Medium 1

Disclosures per year

  1. Apache MINA: Critical Deserialization Allow-list Bypass via resolveProxyClass
    Critical · 9.8 CVE-2026-47065 >= 2.2.0, < 2.2.8, >= 2.1.0, < 2.1.13, < 2.0.29 2.2.8, 2.1.13, 2.0.29
  2. Apache MINA vulnerable to Deserialization of Untrusted Data (CVE-2026-41409 Incomplete Fix)
    Critical · 9.8 CVE-2026-42778 >= 2.1.0, < 2.1.12, >= 2.2.0, < 2.2.7 2.1.12, 2.2.7
  3. Apache MINA vulnerable to Deserialization of Untrusted Data (CVE-2026-41635 Incomplete Fix)
    Critical · 9.8 CVE-2026-42779 >= 2.1.0, < 2.1.12, >= 2.2.0, < 2.2.7 2.1.12, 2.2.7
  4. Apache MINA Vulnerable to Deserialization of Untrusted Data (CVE-2024-52046 Incomplete Fix)
    Critical · 9.8 CVE-2026-41409 >= 2.0.0, < 2.0.28, >= 2.1.0, < 2.1.11, >= 2.2.0, < 2.2.6 2.0.28, 2.1.11, 2.2.6
  5. Apache MINA vulnerable to Deserialization of Untrusted Data this entry
    Critical · 9.8 CVE-2026-41635 >= 2.0.0, < 2.0.28, >= 2.1.0, < 2.1.11, >= 2.2.0, < 2.2.6 2.0.28, 2.1.11, 2.2.6
  6. Apache MINA Deserialization RCE Vulnerability
    Critical · 9.8 CVE-2024-52046 >= 2.2.0, < 2.2.4, >= 2.1.0, < 2.1.10, >= 2.0.0-M1, < 2.0.27 2.2.4, 2.1.10, 2.0.27
  7. Cleartext Transmission of Sensitive Information in Apache MINA
    High · 7.5 CVE-2019-0231 < 2.0.21, >= 2.1.0, < 2.1.1 2.0.21, 2.1.1
  8. Infinite loop in Apache MINA
    Medium · 6.5 CVE-2021-41973 >= 2.1.0, < 2.1.5, < 2.0.22 2.1.5, 2.0.22

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