{"id":"BIT-activemq-2026-33227","summary":"Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ: Improper Limitation of a Pathname to a Restricted Classpath Directory","details":"Improper validation and restriction of a classpath path name vulnerability in \n\n Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ.\n\n\n\nIn two instances (when creating a Stomp consumer and also browsing messages in the Web console) an authenticated user provided \"key\" value could be constructed to traverse the classpath due to path concatenation. As a result, the application is exposed to a classpath path resource loading vulnerability that could potentially be chained together with another attack to lead to exploit.\n\n\n\n\n\nThis issue affects Apache ActiveMQ Client: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ Broker: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ All: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ Web: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ: before 5.19.3, from 6.0.0 before 6.2.2.\n\nUsers are recommended to upgrade to version 5.19.4 or 6.2.3, which fixes the issue. Note: 5.19.3 and 6.2.2 also fix this issue, but that is limited to non-Windows environments due to a path separator resolution bug fixed in 5.19.4 and 6.2.3.","aliases":["CVE-2026-33227","GHSA-h2h4-5m64-m273"],"modified":"2026-09-08T08:45:07.671490016Z","published":"2026-04-09T08:36:51.132Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:apache:activemq:*:*:*:*:*:maven:*:*"]},"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2026/04/06/4"},{"type":"ADVISORY","url":"https://activemq.apache.org/security-advisories.data/CVE-2026-33227-announcement.txt"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33227"}],"affected":[{"package":{"name":"activemq","ecosystem":"Bitnami","purl":"pkg:bitnami/activemq"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"5.19.3"},{"introduced":"6.0.0"},{"fixed":"6.2.2"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/activemq/BIT-activemq-2026-33227.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"}]}],"schema_version":"1.9.0"}