BIT-activemq-2026-50734

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    BIT-activemq-2026-50734

    Published: 6 Jul 2026Last Modified: 4 Nov 2026

    Summary: Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All: Pre-authentication OpenWire memory-allocation DoS during wire format negotiation

    Details: Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All. An unauthenticated network attacker can cause a broker DoS by sending a crafted WireFormatInfo frame with a malicious large size value. The value is not validate and causes the broker to attempt allocation during pre-auth negotiation which can trigger OOM and crash the broker. This issue affects Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7. Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.

    References: http://www.openwall.com/lists/oss-security/2026/06/29/10, https://lists.apache.org/thread/nxso951fnvf72qf9m475mpz4yf931xk0, https://nvd.nist.gov/vuln/detail/CVE-2026-50734

    Affected packages

    Package

    Name: activemq

    Purl: pkg:bitnami/activemq

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -5.19.8

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    BIT-activemq-2026-50734 | CVE-DB