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Package details: pkg:maven/org.apache.activemq/activemq-mqtt@6.0.0
purl pkg:maven/org.apache.activemq/activemq-mqtt@6.0.0
Next non-vulnerable version 6.2.1
Latest non-vulnerable version 6.2.4
Risk 3.4
Vulnerabilities affecting this package (2)
Vulnerability Summary Fixed by
VCID-bktu-qch2-5ugv
Aliases:
CVE-2025-66168
GHSA-c825-6ph3-4h84
Apache ActiveMQ is Vulnerable to Integer Overflow or Wraparound Apache ActiveMQ does not properly validate the remaining length field which may lead to an overflow during the decoding of malformed packets. When this integer overflow occurs, ActiveMQ may incorrectly compute the total Remaining Length and subsequently misinterpret the payload as multiple MQTT control packets which makes the broker susceptible to unexpected behavior when interacting with non-compliant clients. This behavior violates the MQTT v3.1.1 specification, which restricts Remaining Length to a maximum of 4 bytes. The scenario occurs on established connections after the authentication process. Brokers that are not enabling mqtt transport connectors are not impacted. This issue affects Apache ActiveMQ: before 5.19.2, 6.0.0 to 6.1.8, and 6.2.0 Users are recommended to upgrade to version 5.19.2, 6.1.9, or 6.2.1, which fixes the issue.
6.1.9
Affected by 0 other vulnerabilities.
6.2.1
Affected by 0 other vulnerabilities.
VCID-tyaw-6dpw-mudm
Aliases:
CVE-2026-40046
GHSA-xvqc-pp94-fmpx
Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT vulnerable to Integer Overflow or Wraparound Integer Overflow or Wraparound vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT. The fix for "CVE-2025-66168: MQTT control packet remaining length field is not properly validated" was only applied to 5.19.2 (and future 5.19.x) releases but was missed for all 6.0.0+ versions. This issue affects Apache ActiveMQ: from 6.0.0 before 6.2.4; Apache ActiveMQ All: from 6.0.0 before 6.2.4; Apache ActiveMQ MQTT: from 6.0.0 before 6.2.4. Users are recommended to upgrade to version 6.2.4 or a 5.19.x version starting with 5.19.2 or later (currently latest is 5.19.5), which fixes the issue.
6.2.4
Affected by 0 other vulnerabilities.
Vulnerabilities fixed by this package (0)
Vulnerability Summary Aliases
This package is not known to fix vulnerabilities.

Date Actor Action Vulnerability Source VulnerableCode Version
2026-04-13T07:05:04.446164+00:00 GHSA Importer Affected by VCID-tyaw-6dpw-mudm https://github.com/advisories/GHSA-xvqc-pp94-fmpx 38.3.0
2026-04-13T07:05:01.937966+00:00 GHSA Importer Affected by VCID-bktu-qch2-5ugv https://github.com/advisories/GHSA-c825-6ph3-4h84 38.3.0
2026-04-01T16:08:21.691966+00:00 GHSA Importer Affected by VCID-bktu-qch2-5ugv https://github.com/advisories/GHSA-c825-6ph3-4h84 38.0.0