{"id":"CVE-2026-67589","published":"2026-08-05T06:16:39.583","lastModified":"2026-08-07T20:39:28.130","description":"A pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to potential denial of service.\n\nThis issue affects Apache Qpid ProtonJ2: through 1.1.0.\n\nUsers are recommended to upgrade to version 1.2.0, which fixes the issue.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-789"],"vendors":["apache"],"products":["qpid protonj2"],"references":[{"url":"https://lists.apache.org/thread/bs24x4778dh72xtfs299cy8krvdlo47q","tags":["Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/08/04/28","tags":["Third Party Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The flaw involves improper type size/count handling that can lead to excessive memory allocation, potentially causing a denial of service.","exploitability":"Exploitation requires pre-authentication access and specific conditions on message sizes or counts; it is moderately difficult.","blast_radius":"If exploited, the impact could be significant as it may disrupt services relying on affected Apache Qpid ProtonJ2 versions.","remediation":"Upgrade to Apache Qpid ProtonJ2 version 1.2.0 immediately to address this issue.","tags":["dos","memory-overflow","upgrade"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-08-11T06:56:44.326Z"}}