{"answers":{"affected":"17 open source packages ship an affected version, including org.apache.activemq:activemq-all, activemq and org.apache.activemq:activemq-broker. It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-39304 in the wild and no public exploit code.","fix":"Upgrade org.apache.activemq:activemq-all to a fixed version for your release line: 5.19.4 or 6.2.4.","what":"CVE-2026-39304 is a high-severity denial of service vulnerability in Apache Activemq, published on 10 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-39304 and fix it if it is affected.\n\nWhat it is: CVE-2026-39304 is a high-severity denial of service vulnerability in Apache Activemq, published on 10 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-39304 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.activemq:activemq-all (Maven): affected all versions; fixed in 5.19.4\n- org.apache.activemq:activemq-all (Maven): affected all versions; fixed in 5.19.4\n- org.apache.activemq:activemq-all (Maven): affected from 6.0.0; fixed in 6.2.4\n- org.apache.activemq:activemq-all (Maven): affected from 6.0.0; fixed in 6.2.4\n- activemq (Bitnami): affected all versions; fixed in 5.19.4, 6.2.4\n- org.apache.activemq:activemq-broker (Maven): affected all versions; fixed in 5.19.4\n- org.apache.activemq:activemq-broker (Maven): affected all versions; fixed in 5.19.4\n- org.apache.activemq:activemq-broker (Maven): affected from 6.0.0; fixed in 6.2.4\n- org.apache.activemq:activemq-broker (Maven): affected from 6.0.0; fixed in 6.2.4\n- org.apache.activemq:activemq-client (Maven): affected all versions; fixed in 5.19.4\n- org.apache.activemq:activemq-client (Maven): affected all versions; fixed in 5.19.4\n- org.apache.activemq:activemq-client (Maven): affected from 6.0.0; fixed in 6.2.4\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-39304/ (Markdown: https://insights.sbomify.com/CVE-2026-39304/index.md)","id":"CVE-2026-39304","markdown":"https://insights.sbomify.com/CVE-2026-39304/index.md","name":"CVE-2026-39304","record":{"aliases":["BIT-activemq-2026-39304","DEBIAN-CVE-2026-39304","GHSA-5568-6qcg-g7fx","MINI-53rj-m3gh-4p5j","MINI-59xh-9j2x-3wjf","MINI-64ch-98hp-h8w3","MINI-cfw9-xq29-57wv","MINI-fgrm-v85g-mj99","MINI-qhmq-jc26-jqmr","ROOT-APP-MAVEN-CVE-2026-39304","UBUNTU-CVE-2026-39304"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Apache ActiveMQ","requires_auth":"none","summary":"A remote attacker can cause a Denial of Service via Out of Memory in Apache ActiveMQ by exploiting incorrect TLSv1.3 KeyUpdate handling.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"activemq","vendor":"apache"},{"product":"activemq_broker","vendor":"apache"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"},{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ.\n\nActiveMQ NIO SSL transports do not correctly handle TLSv1.3 handshake KeyUpdates triggered by clients. This makes it possible for a client to rapidly trigger updates which causes the broker to exhaust all its memory in the SSL engine leading to DoS.\n\nNote: TLS versions before TLSv1.3 (such as TLSv1.2) are broken but are not vulnerable to OOM. Previous TLS versions require a full handshake renegotiation which causes a connection to hang but not OOM. This is fixed as well.\nThis issue affects Apache ActiveMQ Client: before 5.19.4, from 6.0.0 before 6.2.4; Apache ActiveMQ Broker: before 5.19.4, from 6.0.0 before 6.2.4; Apache ActiveMQ: before 5.19.4, from 6.0.0 before 6.2.4.\n\nUsers are recommended to upgrade to version 6.2.4 or 5.19.5, which fixes the issue.","ecosystems":["Bitnami","Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Apache ActiveMQ: Denial of Service via Out of Memory vulnerability","id":"CVE-2026-39304","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"apache:activemq","products":["apache:activemq"],"type":"denial_of_service","year":"2026"},"n_packages":17,"n_references":1,"next":{"headline":"Arbitrary File Write / Path Traversal in Action Orchestrator","id":"CVE-2026-39305"},"packages":[{"ecosystem":"Bitnami","fixed":["5.19.4","6.2.4"],"introduced":["0","6.0.0"],"last_affected":[],"package":"activemq","purl":"pkg:bitnami/activemq","source":"BIT-activemq-2026-39304"},{"ecosystem":"Maven","fixed":["5.19.4"],"introduced":["0"],"last_affected":[],"package":"org.apache.activemq:activemq-all","purl":null,"source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["5.19.4"],"introduced":["0"],"last_affected":[],"package":"org.apache.activemq:activemq-all","purl":"pkg:maven/org.apache.activemq/activemq-all","source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["6.2.4"],"introduced":["6.0.0"],"last_affected":[],"package":"org.apache.activemq:activemq-all","purl":null,"source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["6.2.4"],"introduced":["6.0.0"],"last_affected":[],"package":"org.apache.activemq:activemq-all","purl":"pkg:maven/org.apache.activemq/activemq-all","source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["5.19.4"],"introduced":["0"],"last_affected":[],"package":"org.apache.activemq:activemq-broker","purl":null,"source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["5.19.4"],"introduced":["0"],"last_affected":[],"package":"org.apache.activemq:activemq-broker","purl":"pkg:maven/org.apache.activemq/activemq-broker","source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["6.2.4"],"introduced":["6.0.0"],"last_affected":[],"package":"org.apache.activemq:activemq-broker","purl":null,"source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["6.2.4"],"introduced":["6.0.0"],"last_affected":[],"package":"org.apache.activemq:activemq-broker","purl":"pkg:maven/org.apache.activemq/activemq-broker","source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["5.19.4"],"introduced":["0"],"last_affected":[],"package":"org.apache.activemq:activemq-client","purl":null,"source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["5.19.4"],"introduced":["0"],"last_affected":[],"package":"org.apache.activemq:activemq-client","purl":"pkg:maven/org.apache.activemq/activemq-client","source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["6.2.4"],"introduced":["6.0.0"],"last_affected":[],"package":"org.apache.activemq:activemq-client","purl":null,"source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["6.2.4"],"introduced":["6.0.0"],"last_affected":[],"package":"org.apache.activemq:activemq-client","purl":"pkg:maven/org.apache.activemq/activemq-client","source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["5.19.4"],"introduced":["0"],"last_affected":[],"package":"org.apache.activemq:apache-activemq","purl":null,"source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["5.19.4"],"introduced":["0"],"last_affected":[],"package":"org.apache.activemq:apache-activemq","purl":"pkg:maven/org.apache.activemq/apache-activemq","source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["6.2.4"],"introduced":["6.0.0"],"last_affected":[],"package":"org.apache.activemq:apache-activemq","purl":null,"source":"GHSA-5568-6qcg-g7fx"},{"ecosystem":"Maven","fixed":["6.2.4"],"introduced":["6.0.0"],"last_affected":[],"package":"org.apache.activemq:apache-activemq","purl":"pkg:maven/org.apache.activemq/apache-activemq","source":"GHSA-5568-6qcg-g7fx"}],"prev":{"headline":"File upload in n/a","id":"CVE-2026-39292"},"products":["Apache ActiveMQ","Apache ActiveMQ All","Apache ActiveMQ Broker","Apache ActiveMQ Client"],"published":"2026-04-10","related":[{"cvss_score":10,"headline":"Apache ActiveMQ Deserialization of Untrusted Data","id":"CVE-2023-46604","kev_date_added":"2023-11-02","published":"2023-10-27"},{"cvss_score":9.8,"headline":"Apache ActiveMQ Improper Input Validation","id":"CVE-2016-3088","kev_date_added":"2022-02-10","published":"2016-06-01"},{"cvss_score":8.8,"headline":"Apache ActiveMQ Improper Input Validation","id":"CVE-2026-34197","kev_date_added":"2026-04-16","published":"2026-04-07"},{"cvss_score":9.8,"headline":"Remote code execution in Apache ActiveMQ","id":"CVE-2020-11998","kev_date_added":null,"published":"2020-09-10"},{"cvss_score":9.8,"headline":"Command Injection in Xstream","id":"CVE-2013-7285","kev_date_added":null,"published":"2019-05-15"},{"cvss_score":9.8,"headline":"Improper Restriction of XML External Entity Reference in Apache ActiveMQ","id":"CVE-2014-3600","kev_date_added":null,"published":"2017-10-27"},{"cvss_score":9.8,"headline":"Improper Input Validation in Apache ActiveMQ","id":"CVE-2015-5254","kev_date_added":null,"published":"2016-01-08"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-15","vendors":["Apache Software Foundation"]},"summary":"A remote attacker can cause a Denial of Service via Out of Memory in Apache ActiveMQ by exploiting incorrect TLSv1.3 KeyUpdate handling.","url":"https://insights.sbomify.com/CVE-2026-39304/"}