CVE-2026-111821None▾ SunlitImproper input validation vulnerability in Apache ActiveMQ, Apache ActiveMQ KahaDB. A user can create a durable subscription with a clientId and subscription name that have a combined length > 65,535 (while separately being shorter) o…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Improper input validation vulnerability in Apache ActiveMQ, Apache ActiveMQ KahaDB.
A user can create a durable subscription with a clientId and subscription name that have a combined length > 65,535 (while separately being shorter) on a broker using KahaDB which can cause the broker to shutdown and be unrecoverable.
This issue affects Apache ActiveMQ: from 6.0.0 before 6.3.3, before 5.19.12; Apache ActiveMQ KahaDB: from 6.0.0 before 6.3.3, before 5.19.12.
Users are recommended to upgrade to version 6.4.0, 6.3.3 or 5.19.12, which fixes the issue.
org.apache.activemq:apache-activemq >= 6.0.0 < 6.3.3org.apache.activemq:apache-activemq < 5.19.12org.apache.activemq:activemq-kahadb-store >= 6.0.0 < 6.3.3org.apache.activemq:activemq-kahadb-store < 5.19.12Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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