CVE-2026-71253 (GCVE-0-2026-71253)

Vulnerability from cvelistv5 – Published: 2026-10-19 10:36 – Updated: 2026-10-20 19:34
VLAI
Title
Apache Johnzon: ClassConverter loads & static-initializes an attacker-named class from untrusted JSON
Summary
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.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 19:34 UTC
CWE
  • CWE-470 - Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1093 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache Johnzon Affected: 2.0.0 , < 2.2.0 (semver)
Affected: 1.0.0 , < 1.3.1 (semver)
guessed Create a notification for this product.
Credits
n0mi1k Security
Show details on NVD website
To clipboard 

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