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bdu:2026-11865

BIT-activemq-2026-39304 — Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Incorrect handling of TLSv1.3 Key…

Affected: Bitnami: activemq

Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ.

ActiveMQ 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.

Note: 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. This 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.

Users are recommended to upgrade to version 6.2.4 or 5.19.5, which fixes the issue.

certfr-2026-avi-0901 — De multiples vulnérabilités ont été découvertes dans les produits IBM. Certaines d'entre elles permettent à un attaquan…

certfr-2026-avi-0901

EUVD-2026-337285

fkie_cve-2026-39304

Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ.

Users are recommended to upgrade to version 6.2.4 or 5.19.5, which fixes the issue.

GHSA-5568-6qcg-g7fx — Apache ActiveMQ: Denial of Service via Out of Memory vulnerability

Affected: Maven: org.apache.activemq:activemq-client, Maven: org.apache.activemq:activemq-broker, Maven: org.apache.activemq:activemq-all, Maven: org.apache.activemq:apache-activemq

Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ.

Users are recommended to upgrade to version 6.2.4 or 5.19.5, which fixes the issue.

OESA-2026-2124 — activemq security update

Affected: openEuler:22.03-LTS-SP4: activemq

The most popular and powerful open source messaging and Integration Patterns server. Security Fix(es):

['Severity: low \n\nAffected versions:\n\n- Apache ActiveMQ Client (org.apache.activemq:activemq-client) before 5.19.3\n- Apache ActiveMQ Client (org.apache.activemq:activemq-client) 6.0.0 before 6.2.2\n- Apache ActiveMQ Broker (org.apache.activemq:activemq-broker) before 5.19.3\n- Apache ActiveMQ Broker (org.apache.activemq:activemq-broker) 6.0.0 before 6.2.2\n- Apache ActiveMQ (org.apache.activemq:activemq-all) before 5.19.3\n- Apache ActiveMQ (org.apache.activemq:activemq-all) 6.0.0 before 6.2.2\n- Apache ActiveMQ Web (org.apache.activemq:activemq-web) before 5.19.3\n- Apache ActiveMQ Web (org.apache.activemq:activemq-web) 6.0.0 before 6.2.2\n\nDescription:\n\nImproper validation and restriction of a classpath path name vulnerability in Apache ActiveMQ Client, Apache ActiveMQ \nBroker, Apache ActiveMQ All.\n\nIn two instances (when creating a Stomp consumer and also browsing messages in the Web console) an authenticated user \nprovided "key" value could be constructed to traverse the classpath due to path concatenation. As a result, the \napplication is exposed to a classpath path resource loading vulnerability that could potentially be chained together \nwith another attack to lead to exploit.This issue affects Apache ActiveMQ Client: before 5.19.3, from 6.0.0 before \n6.2.2; Apache ActiveMQ Broker: before 5.19.3, from 6.0.0 before 6.2.2; Apache Activ…

UBUNTU-CVE-2026-39304

Affected: Ubuntu:Pro:16.04:LTS: activemq, Ubuntu:Pro:18.04:LTS: activemq, Ubuntu:Pro:20.04:LTS: activemq, Ubuntu:Pro:22.04:LTS: activemq, Ubuntu:24.04:LTS: activemq, Ubuntu:25.10: activemq, Ubuntu:26.04:LTS: activemq

Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ. ActiveMQ 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. Note: 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. This 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. Users are recommended to upgrade to version 6.2.4 or 5.19.5, which fixes the issue.

WID-SEC-W-2026-1040 — Apache ActiveMQ: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Apache ActiveMQ ausnutzen, um einen Denial of Service Angriff durchzuführen oder um nicht näher spezifizierte Auswirkungen zu verursachen