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

- 種別: advisory
- 重大度: medium
- 関連技術: java
- CVE: CVE-2026-113730
- 公開日時: 2026-10-21T16:31:04.000Z
- 情報源: GitHub Advisory Database (https://github.com/advisories/GHSA-crwc-vw2r-qr6m)
- パーマリンク: https://vulnpulse.app/items/ghsa-ghsa-crwc-vw2r-qr6m

影響: maven:ognl:ognl <= 3.4.12 → 3.4.13
Summary 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(…