OGNL stricter-invocation block list bypass via java.lang.reflect reflection proxies

影響: maven:ognl:ognl <= 3.4.12 → 3.4.13

OGNL's optional stricter invocation mode maintains a block list that prevents expressions from directly calling methods on dangerous classes such as Runtime, ProcessBuilder, and ClassLoader. The block list filters on the declaring class of the method OGNL invokes. Because java.lang.reflect.Method (and Constructor/Field) are not on the list, an expression can use reflection as a proxy — someMethod.invoke(target, args) — to reach a blocked method. The real call (e.g. ProcessBuilder.start(…

GitHub Advisory Databaseで読む

2026/10/22 01:31、GitHub Advisory Databaseが「OGNL stricter-invocation block list bypass via java.lang.reflect reflection proxies」を公開しました (種別: 脆弱性アドバイザリ)。重大度は「警告」(medium) です。関連する技術: Java。CVE: CVE-2026-113730。