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Memory Allocation with Excessive Size Value

CVE-2026-53917

High
7.5/10

Summary

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker. An authenticated user can cause a broker DoS by sending a crafted OpenWire Message with a large encoded size value for the map. OpenWire message property maps are unmarshaled without size validationwhich can trigger OOM and crash the broker. This issue affects Apache ActiveMQ: prior to 5.19.8, from 6.0.0 prior to 6.2.7; Apache ActiveMQ All: prior to 5.19.8, from 6.0.0 prior to 6.2.7; Apache ActiveMQ Client: prior to 5.19.8, from 6.0.0 prior to 6.2.7; Apache ActiveMQ Broker: prior to 5.19.8, from 6.0.0 prior to 6.2.7. Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • NONE
  • HIGH

CWE-789 - Memory Allocation with Excessive Size Value

The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

References

Advisory Timeline

  • Published