CRITICALCVSS v3.1 9.8Vulnerability
CVE-2026-71253
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.
Properties
- Severity
- CRITICAL
- Nvd fetched at
- 2026-10-20T21:14:08.448323+00:00
- Cvss severity
- CRITICAL
- Cvss score
- 9.8
- Epss score
- 0.00358
- Retrieved at
- 2026-10-21T01:24:50+00:00
- Last source
- FIRST EPSS
- Score
- 9.8
- Cvss version
- 3.1
- Cve id
- CVE-2026-71253
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- First seen by Signal
- 2026-10-19T15:10:32+00:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Published at
- 2026-10-19T11:17:18.540
- Last modified
- 2026-10-20T20:17:24.763
- Epss percentile
- 0.28168
Related Entities (1)
HAS_WEAKNESS (1)
Explore deeper with Ninja Signal's threat intelligence graph