{"id":"CVE-2026-47065","aliases":["GHSA-v3pr-hxpr-mfm8"],"url":"https://o3.security/vulnerability/CVE-2026-47065","summary":"Apache MINA: Critical Deserialization Allow-list Bypass via resolveProxyClass - ZDRES-232","details":"ZDRES-232: resolveProxyClass Not Overridden - acceptMatchers Filter Bypass via java.lang.reflect.Proxy\n\n\nAssessment: Fully addressed.\n\n\nWhen the serialised stream contains a TC_PROXYCLASSDESC (the marker \nfor a java.lang.reflect.Proxy ), JDK’s ObjectInputStream.readProxyDesc()\n is\ndispatched. JDK then calls the default \nObjectInputStream.resolveProxyClass(interfaces) implementation, which \nperforms Class.forName(intf, false, latestUserDefinedLoader()) for EACH \ninterface name and constructs the proxy class — bypassing the accepted\n classes list .\n\n\nZDRES-233: Class.forName(name, initialize=true, classLoader) in \nreadClassDescriptor Triggers Static Initialiser of Allow-Listed Classes\n\n\nAssessment: Fully addressed.\n\n\nFor ANY class on the allow-list, deserialising a stream that names it triggers the class’s \n (static initialiser) BEFORE any instance is constructed. This means an \nattacker who supplies a class name on the allow-list (e.g., the \ndeveloper wrote accept(“com.myapp.*\") , attacker supplies \ncom.myapp.SomeClass ) causes <clinit> of SomeClass — and many \nreal-world classes have side-effecting static initialisers\n\n\nBoth issues have been fixed.","published":"2026-06-03T09:39:41.629Z","modified":"2026-08-12T03:51:44.365538709Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.005,"percentile":0.40138,"asOf":"2026-08-10"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.mina:mina-core","fixedVersion":"2.2.8"},{"ecosystem":"Maven","name":"org.apache.mina:mina-core","fixedVersion":"2.1.13"},{"ecosystem":"Maven","name":"org.apache.mina:mina-core","fixedVersion":"2.0.29"}],"fix":null,"references":[{"type":"WEB","url":"https://repo.maven.apache.org/maven2/org/apache/mina"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47065.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/y7xj1bl8qo47p9bktb11hg5v6k1d4dyj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47065"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:44.365538709Z"}}