critical9.8
CVE-2026-71253
Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Johnzon.
Impact
Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Johnzon. ClassConverter loads & static-initializes an attacker-named class from untrusted JSON. This issue affects Apache Johnzon: from 1.0.0 before 2.2.0. Users are recommended to upgrade to version 1.3.1 (javax namespace) or 2.2.0 (jakarta specification namespace), which fixes the issue.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Apache | Apache Johnzon: From 1.0.0 | before 2.2.0. |
Versions were read from the advisory text. No structured product data has been published for this record yet.