{"id":"CVE-2019-12400","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-12400","generatedAt":"2026-10-28T22:44:08.860Z","title":"However, if some untrusted code can register a malicious implementation with the thread context class loader first, then this implementation might be cached and re-used by Apache Santuario - XML Security for Java, leading to potential security flaws…","description":"In version 2.0.3 Apache Santuario XML Security for Java, a caching mechanism was introduced to speed up creating new XML documents using a static pool of DocumentBuilders. However, if some untrusted code can register a malicious implementation with the thread context class loader first, then this implementation might be cached and re-used by Apache Santuario - XML Security for Java, leading to potential security flaws when validating signed documents, etc. The vulnerability affects Apache Santuario - XML Security for Java 2.0.x releases from 2.0.3 and all 2.1.x releases before 2.1.4.","published":"2019-08-23T21:15:11.000Z","lastModified":"2026-06-17T02:14:34.000Z","status":"Modified","sourceIdentifier":"security@apache.org","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-20"],"affected":["apache/santuario xml security for java","redhat/jboss enterprise application platform","oracle/weblogic server"],"epss":{"score":0.00776,"percentile":0.55585,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.78%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://santuario.apache.org/secadv.data/CVE-2019-12400.asc?version=1&modificationDate=1566573083000&api=v2","tags":["Vendor Advisory"],"source":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2020:0804","tags":["Third Party Advisory"],"source":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2020:0805","tags":["Third Party Advisory"],"source":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2020:0806","tags":["Third Party Advisory"],"source":"security@apache.org"},{"url":"https://access.redhat.com/errata/RHSA-2020:0811","tags":["Third Party Advisory"],"source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/8e814b925bf580bc527d96ff51e72ffe5bdeaa4b8bf5b89498cab24c%40%3Cdev.santuario.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/edaa7edb9c58e5f5bd0c950f2b6232b62b15f5c44ad803e8728308ce%40%3Cdev.santuario.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r107bffb06a5e27457fe9af7dfe3a233d0d36c6c2f5122f117eb7f626%40%3Ccommits.tomee.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/r1c07a561426ec5579073046ad7f4207cdcef452bb3100abaf908e0cd%40%3Ccommits.santuario.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/rcdc0da94fe21b26493eae47ca987a290bdf90c721a7a42491fdd41d4%40%3Ccommits.tomee.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/rf82be0a7c98cd3545e20817bb96ed05551ea0020acbaf9a469fef402%40%3Ccommits.tomee.apache.org%3E","source":"security@apache.org"},{"url":"https://lists.apache.org/thread.html/rf958cea96236de8829940109ae07e870aa3d59235345421e4924ff03%40%3Ccommits.tomee.apache.org%3E","source":"security@apache.org"},{"url":"https://security.netapp.com/advisory/ntap-20190910-0003/","tags":["Third Party Advisory"],"source":"security@apache.org"},{"url":"https://www.oracle.com/security-alerts/cpuoct2021.html","tags":["Patch","Third Party Advisory"],"source":"security@apache.org"},{"url":"http://santuario.apache.org/secadv.data/CVE-2019-12400.asc?version=1&modificationDate=1566573083000&api=v2","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0804","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0805","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0806","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2020:0811","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/8e814b925bf580bc527d96ff51e72ffe5bdeaa4b8bf5b89498cab24c%40%3Cdev.santuario.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/edaa7edb9c58e5f5bd0c950f2b6232b62b15f5c44ad803e8728308ce%40%3Cdev.santuario.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r107bffb06a5e27457fe9af7dfe3a233d0d36c6c2f5122f117eb7f626%40%3Ccommits.tomee.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/r1c07a561426ec5579073046ad7f4207cdcef452bb3100abaf908e0cd%40%3Ccommits.santuario.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rcdc0da94fe21b26493eae47ca987a290bdf90c721a7a42491fdd41d4%40%3Ccommits.tomee.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rf82be0a7c98cd3545e20817bb96ed05551ea0020acbaf9a469fef402%40%3Ccommits.tomee.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.apache.org/thread.html/rf958cea96236de8829940109ae07e870aa3d59235345421e4924ff03%40%3Ccommits.tomee.apache.org%3E","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20190910-0003/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.oracle.com/security-alerts/cpuoct2021.html","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-12400","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."}