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.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8465-1 advisory.

    It was discovered that Apache MINA lacked an acceptMatchers allowlist mechanism to restrict which classes     could be deserialized. An attacker could use this to execute arbitrary code. This issue only affected     Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-52046)

    It was discovered that Apache MINA's deserialization filter could be bypassed via multiple code paths. An     attacker could use this to execute arbitrary code by sending a specially crafted serialized object over     the network. (CVE-2026-42778, CVE-2026-42779, CVE-2026-47065)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2026-42779)

Note that Nessus relies on the presence of the package as reported by the vendor.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-42779)

ID	Name	Product	Family	Severity
322480	Ubuntu 22.04 LTS / 24.04 LTS / 26.04 LTS : Apache MINA vulnerabilities (USN-8465-1)	Nessus	Ubuntu Local Security Checks	critical
318711	Linux Distros Unpatched Vulnerability : CVE-2026-42779	Nessus	Misc.	critical
441473	SCA: security update for org.apache.mina:mina-core (GHSA-vf5j-865m-mq7c)	Tenable Cloud Security	SCA Checks	critical
441473	SCA: security update for org.apache.mina:mina-core (GHSA-vf5j-865m-mq7c)	Tenable Self-Hosted Container Security	SCA Checks	critical

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CVE-2026-42779

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