{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-71253",
        "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
        "state": "PUBLISHED",
        "assignerShortName": "apache",
        "dateReserved": "2026-08-05T11:38:30.610Z",
        "datePublished": "2026-10-19T10:36:41.781Z",
        "dateUpdated": "2026-10-20T19:34:25.835Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09",
                "shortName": "apache",
                "dateUpdated": "2026-10-19T10:36:41.781Z"
            },
            "title": "Apache Johnzon: ClassConverter loads & static-initializes an attacker-named class from untrusted JSON",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "description": "CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')",
                            "lang": "en",
                            "cweId": "CWE-470",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "source": {
                "discovery": "EXTERNAL"
            },
            "affected": [
                {
                    "vendor": "Apache Software Foundation",
                    "product": "Apache Johnzon",
                    "packageURL": "pkg:maven/org.apache.johnzon/johnzon-mapper",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "2.0.0",
                            "lessThan": "2.2.0",
                            "versionType": "semver"
                        },
                        {
                            "status": "affected",
                            "version": "1.0.0",
                            "lessThan": "1.3.1",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected",
                    "collectionURL": "https://repo.maven.apache.org/maven2",
                    "packageName": "org.apache.johnzon:johnzon-mapper"
                }
            ],
            "descriptions": [
                {
                    "value": "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.",
                    "lang": "en",
                    "supportingMedia": [
                        {
                            "type": "text/html",
                            "base64": false,
                            "value": "<p>Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Apache Johnzon.</p><p>ClassConverter loads &amp; static-initializes an attacker-named class from untrusted JSON.<br></p><p>This issue affects Apache Johnzon: from 1.0.0 before 2.2.0.</p><p>Users are recommended to upgrade to version 1.3.1 (javax namespace) or 2.2.0 (jakarta specification namespace), which fixes the issue.</p>"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/apache/johnzon/commit/dd3d00634c746a2173a2518e882e85e8a151bf30",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "url": "https://github.com/apache/johnzon/commit/91e7b0d21d08d138944e2570691939739422a3d6",
                    "tags": [
                        "patch"
                    ]
                },
                {
                    "url": "https://lists.apache.org/thread.html/3vgm1yo2sn9yhkvvs9lc4ro01vl3zt68",
                    "tags": [
                        "vendor-advisory"
                    ]
                }
            ],
            "metrics": [
                {
                    "other": {
                        "type": "Textual description of severity",
                        "content": {
                            "text": "severity: LOW. Although a class initialiser can be triggered remotely it needs 2 separate preconditions: a) there must be a poisonous class-initialiser on the classpath (unlikely). b) there must be a REST POJO with a Class attribute on the project (unlikely as well)"
                        }
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "GENERAL"
                        }
                    ]
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "value": "n0mi1k Security",
                    "type": "finder"
                }
            ],
            "x_generator": {
                "engine": "Vulnogram 0.2.0"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 9.8,
                            "attackVector": "NETWORK",
                            "baseSeverity": "CRITICAL",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                            "integrityImpact": "HIGH",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-10-20T19:34:08.742206Z",
                                "id": "CVE-2026-71253",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-10-20T19:34:25.835Z"
                }
            }
        ]
    }
}