{"id":"CVE-2026-66273","published":"2026-08-05T06:16:38.593","lastModified":"2026-08-07T12:39:01.270","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 Proton-J: through 0.34.1.\n\nUsers are recommended to upgrade to version 0.35.0, 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 proton-j"],"references":[{"url":"https://lists.apache.org/thread/z34s9v5w05qk4qqtz5fs3v9wpxz6fnbh","tags":["Mailing List","Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/08/04/9","tags":["Mailing List","Third Party Advisory"]}],"exploitRefs":[],"hasPoc":false,"ai":{"summary":"The flaw involves type size/count handling which can lead to excessive memory allocation, potentially causing a denial of service. This matters because attackers without authentication can exploit it to disrupt services.","exploitability":"Exploitation is relatively straightforward with preconditions including access to the affected Qpid Proton-J version.","blast_radius":"If exploited, this could significantly impact availability by crashing or slowing down systems using the affected software.","remediation":"Upgrade to Qpid Proton-J version 0.35.0 immediately to mitigate the risk.","tags":["dos","memory-overflow","upgrade"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-08-11T06:56:22.009Z"}}