{"id":"CVE-2026-66274","aliases":["GHSA-p2gc-fm5w-94jj"],"url":"https://o3.security/vulnerability/CVE-2026-66274","summary":"Apache Qpid Proton-J: Unbounded type nesting can lead to pre-authentication stackoverflow","details":"A pre-authentication attacker could leverage type nesting to cause a StackOverflowError potentially leading to 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.","published":"2026-08-05T05:29:44.681Z","modified":"2026-11-03T21:46:33.075486143Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.qpid:proton-j","fixedVersion":"0.35.0"}],"fix":{"url":"https://github.com/apache/qpid-proton-j/commit/92047419cc87bab6220e7adeb354958d8109618e","label":"apache/qpid-proton-j@9204741"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/08/04/10"},{"type":"WEB","url":"https://repo.maven.apache.org/maven2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/66xxx/CVE-2026-66274.json"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/h7xolzws2by2qhdjf7scbx87foxojb5h"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-66274"},{"type":"WEB","url":"https://github.com/apache/qpid-proton-j/commit/92047419cc87bab6220e7adeb354958d8109618e"},{"type":"PACKAGE","url":"https://github.com/apache/qpid-proton-j"},{"type":"WEB","url":"https://github.com/apache/qpid-proton-j/releases/tag/0.35.0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-03T21:46:33.075486143Z"}}