{"id":"CVE-2026-71253","revision":"44dd508816cd44a4af51c6c41260c98d","records":[{"revision":"44dd508816cd44a4af51c6c41260c98d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-71253","aliases":[],"title":"Apache Johnzon: ClassConverter loads & static-initializes an attacker-named class from untrusted JSON","description":"Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Johnzon.\n\n\n\nClassConverter loads & static-initializes an attacker-named class from untrusted JSON.\n\n\n\n\nThis issue affects Apache Johnzon: from 1.0.0 before 2.2.0.\n\n\n\nUsers are recommended to upgrade to version 1.3.1 (javax namespace) or 2.2.0 (jakarta specification namespace), which fixes the issue.","state":0,"publishedAt":"2026-10-19T10:36:41.781+00:00","modifiedAt":"2026-10-20T19:34:25.835+00:00","affected":[{"ecosystem":"https://repo.maven.apache.org/maven2","name":"org.apache.johnzon:johnzon-mapper","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Apache Software Foundation\",\n                    \"product\": \"Apache Johnzon\",\n                    \"packageURL\": \"pkg:maven/org.apache.johnzon/johnzon-mapper\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"2.0.0\",\n                            \"lessThan\": \"2.2.0\",\n                            \"versionType\": \"semver\"\n                        },\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"1.0.0\",\n                            \"lessThan\": \"1.3.1\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\",\n                    \"collectionURL\": \"https://repo.maven.apache.org/maven2\",\n                    \"packageName\": \"org.apache.johnzon:johnzon-mapper\"\n                }"}],"metrics":[],"references":["https://github.com/apache/johnzon/commit/dd3d00634c746a2173a2518e882e85e8a151bf30","https://github.com/apache/johnzon/commit/91e7b0d21d08d138944e2570691939739422a3d6","https://lists.apache.org/thread.html/3vgm1yo2sn9yhkvvs9lc4ro01vl3zt68"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-71253","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-71253","identifiers":["CVE-2026-71253"]},"retained":false,"historicalAffected":[]}],"coverage":[]}