CVE-2026-71253
CVE-2026-71253 · Apache Johnzon: ClassConverter loads & static-initializes an attacker-named class from untrusted JSON
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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.
CVSS 9.8 · Critical · EPSS 0.7% · Fix available
- Published
- Updated
Affected products and versions
apache johnzon
- Versions
- ≥ 2.0.0, < 2.2.0: Affected (semver)
- ≥ 1.0.0, < 1.3.1: Affected (semver)
Update to 1.3.1; Update to 2.2.0