CVE-2026-71253

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{"bugzilla": {"description": "org.apache.johnzon/johnzon-mapper: Apache Johnzon: Arbitrary code execution via unsafe class loading", "id": "2555525", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2555525"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.1", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-470", "details": ["A flaw was found in Apache Johnzon. This vulnerability allows a remote attacker to potentially execute arbitrary code by submitting a specially crafted JSON payload. Due to unsafe class loading in the ClassConverter component, the application loads and statically initializes an attacker-specified class from untrusted input."], "name": "CVE-2026-71253", "package_state": [{"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Out of support scope", "package_name": "johnzon-mapper", "product_name": "Red Hat Fuse 7"}], "public_date": "2026-10-19T10:36:41Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-71253\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-71253\nhttps://github.com/apache/johnzon/commit/91e7b0d21d08d138944e2570691939739422a3d6\nhttps://github.com/apache/johnzon/commit/dd3d00634c746a2173a2518e882e85e8a151bf30\nhttps://lists.apache.org/thread.html/3vgm1yo2sn9yhkvvs9lc4ro01vl3zt68"], "threat_severity": "Important"}

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