CVE-2026-53917 PUBLISHED

Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker: Unbounded memory allocation in OpenWire property unmarshalling

Assigner: apache
Reserved: 11.06.2026 Published: 30.06.2026 Updated: 30.06.2026

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 validation which can trigger OOM and crash the broker. This issue affects 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; Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Broker: 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.

Product Status

Vendor Apache Software Foundation
Product Apache ActiveMQ
Versions Default: unaffected
  • affected from 0 to 5.19.8 (excl.)
  • affected from 6.0.0 to 6.2.7 (excl.)
Vendor Apache Software Foundation
Product Apache ActiveMQ All
Versions Default: unaffected
  • affected from 0 to 5.19.8 (excl.)
  • affected from 6.0.0 to 6.2.7 (excl.)
Vendor Apache Software Foundation
Product Apache ActiveMQ Client
Versions Default: unaffected
  • affected from 0 to 5.19.8 (excl.)
  • affected from 6.0.0 to 6.2.7 (excl.)
Vendor Apache Software Foundation
Product Apache ActiveMQ Broker
Versions Default: unaffected
  • affected from 0 to 5.19.8 (excl.)
  • affected from 6.0.0 to 6.2.7 (excl.)

Credits

  • tonghuaroot finder

References

Problem Types

  • CWE-789 Memory Allocation with Excessive Size Value CWE