{"id":"BIT-jenkins-2021-43859","summary":"Denial of Service by injecting highly recursive collections or maps in XStream","details":"XStream is an open source java library to serialize objects to XML and back again. Versions prior to 1.4.19 may allow a remote attacker to allocate 100% CPU time on the target system depending on CPU type or parallel execution of such a payload resulting in a denial of service only by manipulating the processed input stream. XStream 1.4.19 monitors and accumulates the time it takes to add elements to collections and throws an exception if a set threshold is exceeded. Users are advised to upgrade as soon as possible. Users unable to upgrade may set the NO_REFERENCE mode to prevent recursion. See GHSA-rmr5-cpv2-vgjf for further details on a workaround if an upgrade is not possible.","aliases":["CVE-2021-43859","GHSA-rmr5-cpv2-vgjf"],"modified":"2026-09-08T08:47:38.662976376Z","published":"2025-05-26T07:13:32.699Z","database_specific":{"severity":"High","cpes":["cpe:2.3:a:jenkins:jenkins:*:*:*:*:*:*:*:*"]},"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2022/02/09/1"},{"type":"ADVISORY","url":"https://github.com/x-stream/xstream/commit/e8e88621ba1c85ac3b8620337dd672e0c0c3a846"},{"type":"ADVISORY","url":"https://github.com/x-stream/xstream/security/advisories/GHSA-rmr5-cpv2-vgjf"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/02/msg00018.html"},{"type":"DISCUSSION","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VACQYG356OHUTD5WQGAQ4L2TTFTAV3SJ/"},{"type":"DISCUSSION","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XODFRE2ZL64FICBJDOPWOLPTSSAI4U7X/"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43859"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpuapr2022.html"},{"type":"ADVISORY","url":"https://www.oracle.com/security-alerts/cpujul2022.html"},{"type":"ADVISORY","url":"https://x-stream.github.io/CVE-2021-43859.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2024/12/msg00023.html"}],"affected":[{"package":{"name":"jenkins","ecosystem":"Bitnami","purl":"pkg:bitnami/jenkins"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.319.3"},{"introduced":"2.321.0"},{"fixed":"2.334.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/jenkins/BIT-jenkins-2021-43859.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}],"schema_version":"1.9.0"}