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.
Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apache Software Foundation | Apache Johnzon | unaffected |
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No vendor fix or workaround currently provided.
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Tracking
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Mon, 19 Oct 2026 11:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | Apache Johnzon: ClassConverter loads & static-initializes an attacker-named class from untrusted JSON | |
| Weaknesses | CWE-470 | |
| References |
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-10-19T10:36:41.781Z
Reserved: 2026-08-05T11:38:30.610Z
Link: CVE-2026-71253
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-10-19T11:17:18.540
Modified: 2026-10-19T11:17:18.540
Link: CVE-2026-71253
Redhat
No data.
OpenCVE Enrichment
Updated: 2026-10-19T13:00:15Z
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CWE-470
Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')