CVE-2026-50750 PUBLISHED

Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: Pre-authentication OpenWire DoS following fix for CVE-2026-49270

Assigner: apache
Reserved: 06.06.2026 Published: 30.06.2026 Updated: 30.06.2026

Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.

Following the fix for CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM. This issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.

Users are recommended to upgrade to version 6.2.7, which fixes the issue.

Product Status

Vendor Apache Software Foundation
Product Apache ActiveMQ Broker
Versions Default: unaffected
  • affected from 5.19.7 to 5.19.8 (excl.)
  • affected from 6.2.6 to 6.2.7 (excl.)
Vendor Apache Software Foundation
Product Apache ActiveMQ
Versions Default: unaffected
  • affected from 5.19.7 to 5.19.8 (excl.)
  • affected from 6.2.6 to 6.2.7 (excl.)
Vendor Apache Software Foundation
Product Apache ActiveMQ All
Versions Default: unaffected
  • affected from 5.19.7 to 5.19.8 (excl.)
  • affected from 6.2.6 to 6.2.7 (excl.)

References

Problem Types

  • Denial of Service via Out of Memory