{"id":"CVE-2026-67551","summary":"Apache Qpid Proton Dotnet: Type size/count handling can lead to excessive allocation pre-authentication","details":"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-Dotnet: through 1.0.0.\n\nUsers are recommended to upgrade to version 1.1.0, which fixes the issue.","modified":"2026-08-12T03:51:47.328265172Z","published":"2026-08-05T05:27:24.551Z","database_specific":{"cna_assigner":"apache","cwe_ids":["CWE-789"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67551.json","unresolved_ranges":[{"extracted_events":[{"last_affected":"1.0.0"}],"source":"AFFECTED_FIELD"},{"extracted_events":[{"fixed":"1.0.0"}],"source":"DESCRIPTION"}]},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/08/04/22"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67551.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/o566fhkrr3gg0lyzt24xwvz9w94oo6ro"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67551"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/apache/qpid-proton-dotnet","events":[{"introduced":"0"},{"fixed":"57cecabed730eb60b706e204fac7aacd7f101fad"}],"database_specific":{"cpe":"cpe:2.3:a:apache:qpid_proton-dotnet:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"fixed":"1.1.0"}],"source":"CPE_RANGE"}}],"versions":["1.0.0","1.0.0-M11","1.0.0-M10","1.0.0-M9","1.0.0-M8","1.0.0-M7","1.0.0-M6","1.0.0-M5","1.0.0-M4","1.0.0-M3","1.0.0-M2","1.0.0-M1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67551.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}