CVE-2025-27533

CVE-2025-27533 in Apache ActiveMQ stems from unchecked buffer length during OpenWire unmarshalling, allowing excessive memory allocation and DoS. Affected versions include 6.0.0–6.1.5, 5.18.0–5.18.6, 5.17.0–5.17.6, 5.16.0–5.16.7; 5.19.0 is not affected. If not using mutual TLS, brokers may be vul...

CVE-2021-21341

CVE-2021-21341 affects the XStream Java library (unmarshalling) prior to 1.4.16. The vulnerability enables a remote attacker to cause a denial-of-service by consuming 100% CPU time via manipulated input streams. Impact is described as CPU denial of service; no user impact if the recommended Secur...

CVE-2021-21343

CVE-2021-21343 affects XStream (Java) prior to 1.4.16. The vulnerability arises during unmarshalling when the processed input stream carries type information, enabling an attacker to create new instances based on that data and potentially replace or inject objects, including causing local file de...

CVE-2021-21348

XStream (Java) before version 1.4.16 is vulnerable to a denial of service where a remote attacker can cause a thread to consume maximum CPU time and not return. Public documents consistently describe the issue as affecting XStream’s XML deserialization, with mitigation requiring upgrading to at l...

CVE-2019-0222

CVE-2019-0222 affects Apache ActiveMQ 5.0.0–5.15.8. Description: unmarshalling of a corrupt MQTT frame can cause a broker Out of Memory, rendering the broker unresponsive. Enterprise/Nessus entries in the connected docs classify this as an unpatched/vulnerable issue with no vendor patch available...

CVE-2021-26117

CVE-2021-26117 describes an LDAP authentication weakness in the optional ActiveMQ LDAP login module where anonymous access can bypass password verification. Connected sources confirm affected lines: Apache ActiveMQ Artemis prior to 2.16.0 and Apache ActiveMQ prior to 5.16.1 and 5.15.14. Debian/Ub...

CVE-2018-11775

CVE-2018-11775 affects the Apache ActiveMQ Client, where TLS hostname verification was missing prior to version 5.15.6, enabling potential MITM between a Java application and the ActiveMQ server. The issue is stated as now being enabled by default and is addressed by upgrading the ActiveMQ client...

CVE-2014-3612

CVE-2014-3612 affects Apache ActiveMQ 5.x (JAAS LDAPLoginModule). The vulnerability lets an attacker authenticate with a valid username and an empty password, causing an unauthenticated bind and bypass of authentication. Remediation: upgrade to ActiveMQ 5.10.1 or later (or apply vendor patch) as ...

CVE-2014-3576

CVE-2014-3576 affects Apache ActiveMQ before 5.11.0, where the processControlCommand function in broker/TransportConnection.java allows a remote attacker to shut down the broker via a shutdown command, causing a denial of service. The vulnerability is confirmed in multiple connected sources, incl...

CVE-2026-39304

Summary: CVE-2026-39304 describes a DoS via Out-of-Memory in Apache ActiveMQ components caused by TLSv1.3 KeyUpdate handling in NIO SSL transports. The broker and clients are affected for multiple versions prior to 6.2.4 or 5.19.4, with the recommended fixes being 6.2.4 or 5.19.5. The issue arise...

CVE-2026-53916

CVE-2026-53916 describes a memory allocation issue in Apache ActiveMQ families (ActiveMQ, ActiveMQ All, ActiveMQ Stomp) caused by an unauthenticated STOMP NIO client that can emit header bytes that never terminate. This unbounded header buffering can exhaust the JVM heap. Affected versions are be...

CVE-2026-50750

CVE-2026-50750 describes a pre-authentication Denial of Service in Apache ActiveMQ components where an unauthenticated attacker can flood BrokerInfo messages without a ConnectionInfo, causing an Out of Memory condition and broker crash. Affected ranges include Apache ActiveMQ Broker: 5.19.7 befor...

CVE-2026-54475

Summary of CVE-2026-54475 : A missing authorization check allows unauthorized connections to access temporary destinations in Apache ActiveMQ components. Affected versions include Apache ActiveMQ Broker prior to 5.19.8 and 6.0.0–6.2.6, Apache ActiveMQ All prior to 5.19.8 and 6.0.0–6.2.6, and Apac...

CVE-2026-49432

CVE-2026-49432 affects Apache ActiveMQ, including ActiveMQ All and ActiveMQ Stomp, due to improper input validation on STOMP exposure. A remote unauthenticated attacker can trigger denial-of-service by sending a negative content-length to an exposed STOMP connector. On the NIO STOMP transport, an...

CVE-2026-53917

CVE-2026-53917 describes an unbounded memory allocation vulnerability in OpenWire property unmarshalling in Apache ActiveMQ and related builds. An authenticated user can send a crafted OpenWire Message with a very large encoded size value for a message property map, causing OpenWire maps to be un...

CVE-2026-49434

CVE-2026-49434 is an Improper Input Validation vulnerability affecting Apache ActiveMQ Broker, ActiveMQ, and ActiveMQ All. An attacker with permission to publish/modify LDAP entries (matching configured searchBase/searchFilter) can instantiate denied transports inside the broker JVM, enabling ret...

CVE-2026-50734

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ Client, Apache ActiveMQ, and Apache ActiveMQ All allows an unauthenticated network attacker to cause a broker DoS by sending a crafted WireFormatInfo frame with a malicious large size value. The broker may allocate memor...

CVE-2026-59878

CVE-2026-59878 : Apache ActiveMQ AMQP/NIO frame size validation issue leading to DoS. A remote unauthenticated attacker can send a crafted frame size to exhaust NIO threads and deny service. Affected versions: ActiveMQ AMQP before 5.19.9 (and 6.0.0 before 6.2.8); ActiveMQ before 5.19.9 (and 6.0.0...