CVE-2026-47065 - Apache MINA: Critical Deserialization Allow-list Bypass via resolveProxyClass - ZDRES-232

CVE-2026-47065 - Apache MINA: Critical Deserialization Allow-list Bypass via resolveProxyClass - ZDRES-232

https://cvefeed.io/rssfeed/latest.atom / Wed, 06/03/2026 - 14:27
CVE ID :CVE-2026-47065
Published : June 3, 2026, 9:39 a.m. | 1 hour, 23 minutes ago
Description :ZDRES-232: resolveProxyClass Not Overridden - acceptMatchers Filter Bypass via java.lang.reflect.Proxy Assessment: Fully addressed. When the serialised stream contains a TC_PROXYCLASSDESC (the marker for a java.lang.reflect.Proxy ), JDK’s ObjectInputStream.readProxyDesc() is dispatched. JDK then calls the default ObjectInputStream.resolveProxyClass(interfaces) implementation, which performs Class.forName(intf, false, latestUserDefinedLoader()) for EACH interface name and constructs the proxy class — bypassing the accepted classes list . ZDRES-233: Class.forName(name, initialize=true, classLoader) in readClassDescriptor Triggers Static Initialiser of Allow-Listed Classes Assessment: Fully addressed. For ANY class on the allow-list, deserialising a stream that names it triggers the class’s (static initialiser) BEFORE any instance is constructed. This means an attacker who supplies a class name on the allow-list (e.g., the developer wrote accept(“com.myapp.*") , attacker supplies com.myapp.SomeClass ) causes of SomeClass — and many real-world classes have side-effecting static initialisers Both issues have been fixed.
Severity: 9.8 | CRITICAL
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