CVE-2026-50734

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Apache Software FoundationApache ActiveMQ Client0 < 5.19.8affected
Apache Software FoundationApache ActiveMQ Client6.0.0 < 6.2.7affected
Apache Software FoundationApache ActiveMQ0 < 5.19.8affected
Apache Software FoundationApache ActiveMQ6.0.0 < 6.2.7affected
Apache Software FoundationApache ActiveMQ All0 < 5.19.8affected
Apache Software FoundationApache ActiveMQ All6.0.0 < 6.2.7affected

Weaknesses

  • CWE-789: CWE-789 Memory Allocation with Excessive Size Value

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: partial

References