{"id":"CVE-2026-115721","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-115721","generatedAt":"2026-10-28T11:32:46.823Z","title":"**UNSUPPORTED WHEN ASSIGNED** Unbounded allocation in XML parsing in Apache Vysper; all versions, may lead to an out of memory condition.","description":"**UNSUPPORTED WHEN ASSIGNED**  Unbounded allocation in XML parsing in Apache Vysper; all versions, may lead to an out of memory condition.\n\n\n\n\nThis issue affects all versions of Apache Vysper. Apache Vysper is an XMPP (Jabber) server library.\n\n\n\n\nAs this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative.","published":"2026-10-26T16:17:18.000Z","lastModified":"2026-10-26T16:54:35.000Z","status":"Deferred","sourceIdentifier":"security@apache.org","cvss":{"version":"3.1","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"},"cwe":[],"affected":[],"epss":{"score":0.00474,"percentile":0.40765,"date":"2026-10-27","history":[{"date":"2026-10-27","score":0.00474,"percentile":0.40765}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.47%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-26T16:17:18.000Z","detail":{"score":"7.5","severity":"HIGH","publishedAt":"2026-10-26T16:17:17.673Z"},"summary":"New CVE, high severity (CVSS 7.5)."}],"references":[{"url":"https://lists.apache.org/thread.html/d0bx15hjcs69gktk9tt25vgvk121c9vm","source":"security@apache.org"},{"url":"https://mina.apache.org/vysper-project/","source":"security@apache.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/10/23/20","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-115721","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}