{"id":"CVE-2026-67551","aliases":["EUVD-2026-53057","GHSA-vgxj-mxxf-j384"],"status":"published","title":"Apache Qpid Proton Dotnet: Type size/count handling can lead to excessive allocation pre-authentication","description":"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.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00774,"percentile":0.5624,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-789"],"published":"2026-08-05T05:27:24Z","modified":"2026-10-28T02:31:09Z","products":[{"vendor":"apache","product":"qpid_proton-dotnet"},{"vendor":"apache software foundation","product":"apache qpid proton dotnet"}],"references":[{"url":"https://lists.apache.org/thread/o566fhkrr3gg0lyzt24xwvz9w94oo6ro","tags":["vendor-advisory","Vendor Advisory","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/08/04/22","tags":["Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67551","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-vgxj-mxxf-j384"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67551.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-67551","title":"Apache Qpid Proton Dotnet: Type size/count handling can lead to excessive allocation pre-authentication","description":"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.","status":"published","published":"2026-08-05T05:27:24.551Z","modified":"2026-08-06T15:37:53.625Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T14:20:06.562031Z"}],"euvd":[{"id":"EUVD-2026-53057","description":"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.","status":"published","published":"2026-08-05T05:27:24Z","modified":"2026-08-06T15:37:53Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T18:02:08.101336Z"}],"ghsa":[{"id":"GHSA-vgxj-mxxf-j384","title":"pre-authentication attacker could leverage type size/count handling to cause excessive allocation...","description":"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.","status":"published","published":"2026-08-05T06:30:32Z","modified":"2026-08-07T00:32:14Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T15:10:11.041675Z"}],"nvd":[{"id":"CVE-2026-67551","description":"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.","status":"published","published":"2026-08-05T06:16:39.313Z","modified":"2026-10-24T16:10:00.153Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T14:12:34.643497Z"}],"osv":[{"id":"CVE-2026-67551","title":"Apache Qpid Proton Dotnet: Type size/count handling can lead to excessive allocation pre-authentication","description":"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.","status":"published","published":"2026-08-05T05:27:24.551Z","modified":"2026-10-28T02:31:09.482785707Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-789"],"updated_at":"2026-11-02T15:45:14.46177Z"}]}}