CVE-2026-42779

CRITICAL EPSS 55.2%
Published May 1, 20262mo ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published May 1, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue 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 2.1.0 <= 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.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
55.2% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-502 Deserialization of Untrusted Data Validation

Affected Products 2

VendorProductVersionRange
apachemina*≥2.1.0  –  <2.1.12
apachemina*≥2.2.0  –  <2.2.7

References 1

  • lists.apache.org https://lists.apache.org/thread/fhlx5k91hrkgyzh7yk1nghrn3k27gxy0
    Mailing ListPatchVendor Advisory

Remediation

  • lists.apache.org https://lists.apache.org/thread/fhlx5k91hrkgyzh7yk1nghrn3k27gxy0
    Mailing ListPatchVendor Advisory