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CVE-2026-42778— Apache MINA: CWE-502 Deserialization of Untrusted Data (take 2)

CVSS 9.8 · Critical EPSS 0.26% · P49

Possible ATT&CK Techniques 1AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProductVersion RangeStatus
Apache Software FoundationApache MINA2.2.X≤ 2.2.6affected
2.1.X≤ 2.1.11affected
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I. Basic Information for CVE-2026-42778

Vulnerability Information
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Vulnerability Title
Apache MINA: CWE-502 Deserialization of Untrusted Data (take 2)
Source: NVD (National Vulnerability Database)
Vulnerability Description
The fix for CVE-2026-41409 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description: The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed. Affected versions are Apache MINA 2.1.0 <= 2.1.11, and 2.2.0 <= 2.2.6. The problem is resolved in Apache MINA 2.1.12, and 2.2.7 by applying the classname allowlist earlier. Affected are applications using Apache MINA that call IoBuffer.getObject(). Applications using Apache MINA are advised to upgrade The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed. Affected versions are Apache MINA 2.1.0 <= 2.1.110, and 2.2.0 <= 2.2.6. The problem is resolved in Apache MINA 2.1.12, and 2.2.7 by applying the classname allowlist earlier. Affected are applications using Apache MINA that call IoBuffer.getObject(). Applications using Apache MINA are advised to upgrade
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
可信数据的反序列化
Source: NVD (National Vulnerability Database)
Vulnerability Title
Apache MINA 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache MINA是美国阿帕奇（Apache）基金会的一款网络应用程序框架。该产品主要用于开发高性能和高可伸缩性的网络应用程序。 Apache MINA 2.1.0版本至2.1.11及之前版本和2.2.0版本至2.2.6及之前版本存在代码问题漏洞，该漏洞源于AbstractIoBuffer.getObject的类名允许列表应用过晚，可能导致在读取类时静态初始化器已执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

VendorProductAffected VersionsCPESubscribe
Apache Software FoundationApache MINA 2.2.X ~ 2.2.6 -

II. Public POCs for CVE-2026-42778

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III. Intelligence Information for CVE-2026-42778

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Mailing List Discussions for CVE-2026-42778 (1)

Same Patch Batch · Apache Software Foundation · 2026-05-01 · 5 CVEs total

CVE-2026-427799.8 CRITICALApache MINA: AbstractIoBuffer.resolveClass() null-clazz Branch Skips acceptMatchers Filter
CVE-2026-424027.5 HIGHApache Neethi: Policy Normalization Unbounded Resource Allocation DoS
CVE-2026-424037.5 HIGHApache Neethi: Circular Policy Reference Infinite Loop
CVE-2026-424046.5 MEDIUMApache Neethi: Unrestricted HTTP Redirect Following in Policy References

IV. Related Vulnerabilities

Same product: Apache MINA
Same vendor: Apache Software Foundation
Same weakness: CWE-502

V. Comments for CVE-2026-42778

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