9.8

CVE-2026-42779

Medienbericht

Apache MINA: AbstractIoBuffer.resolveClass() null-clazz Branch Skips acceptMatchers Filter — Full Object Deserialization RCE (take 2)

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Apache ≫ Mina Version >= 2.1.0 < 2.1.12
Apache ≫ Mina Version >= 2.2.0 < 2.2.7
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.19% 0.405
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security@apache.org 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-502 Deserialization of Untrusted Data

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.