{"id":"CVE-2026-33227","state":"PUBLISHED","title":"Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ: Improper Limitation of a Pathname to a Restricted Classpath Directory","description":"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.","publishedAt":"2026-04-07T07:50:58.897Z","updatedAt":"2026-04-08T15:44:39.427Z","severity":{"score":4.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache ActiveMQ Client","Apache Software Foundation Apache ActiveMQ Broker","Apache Software Foundation Apache ActiveMQ All","Apache Software Foundation Apache ActiveMQ Web","Apache Software Foundation Apache ActiveMQ"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ Client","packageName":"org.apache.activemq:activemq-client","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.19.3","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThan":"6.2.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"},{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ Broker","packageName":"org.apache.activemq:activemq-broker","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.19.3","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThan":"6.2.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"},{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ All","packageName":"org.apache.activemq:activemq-all","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.19.3","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThan":"6.2.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"},{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ Web","packageName":"org.apache.activemq:activemq-web","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.19.3","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThan":"6.2.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"},{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ","packageName":"org.apache.activemq:apache-activemq","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.19.3","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThan":"6.2.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"}],"references":["https://activemq.apache.org/security-advisories.data/CVE-2026-33227-announcement.txt","http://www.openwall.com/lists/oss-security/2026/04/06/4"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:11:40.391Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/33xxx/CVE-2026-33227.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-33227","state":"PUBLISHED","datePublished":"2026-04-07T07:50:58.897Z","dateUpdated":"2026-04-08T15:44:39.427Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-03-18T00:08:09.668Z"},"containers":{"cna":{"title":"Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ: Improper Limitation of a Pathname to a Restricted Classpath Directory","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ Client","packageName":"org.apache.activemq:activemq-client","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.19.3","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThan":"6.2.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"},{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ Broker","packageName":"org.apache.activemq:activemq-broker","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.19.3","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThan":"6.2.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"},{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ All","packageName":"org.apache.activemq:activemq-all","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.19.3","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThan":"6.2.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"},{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ Web","packageName":"org.apache.activemq:activemq-web","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.19.3","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThan":"6.2.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"},{"vendor":"Apache Software Foundation","product":"Apache ActiveMQ","packageName":"org.apache.activemq:apache-activemq","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"5.19.3","versionType":"semver"},{"version":"6.0.0","status":"affected","lessThan":"6.2.2","versionType":"semver"}],"collectionURL":"https://repo.maven.apache.org/maven2"}],"references":[{"url":"https://activemq.apache.org/security-advisories.data/CVE-2026-33227-announcement.txt","tags":["vendor-advisory"]}],"metrics":[{"other":{"content":{"text":"low"},"type":"Textual description of severity"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","description":"CWE-22 Improper input validation for resource loading","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-04-08T15:44:39.427Z"},"credits":[{"lang":"en","type":"finder","value":"Dawei Wang"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/04/06/4"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-04-07T08:29:12.768Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":4.3,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"LOW","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-04-07T14:04:21.706397Z","id":"CVE-2026-33227","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-07T14:05:29.211Z"}}]}}}