CVE-2026-49432

Summary

Improper Input Validation vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp.

A remote unauthenticated peer that can reach an exposed STOMP connector can trigger denial-of-service behavior by sending a negative content-length. For the NIO STOMP transport, an attacker can keep streaming body bytes and grow the per-connection command buffer beyond configured limits to cause OOM. For the blocking STOMP protocol, an error will instead force abnormal transport exception handling for the affected connection and closure. 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 Stomp: 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 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
Apache Software FoundationApache ActiveMQ Stomp0 < 5.19.8affected
Apache Software FoundationApache ActiveMQ Stomp6.0.0 < 6.2.7affected

Weaknesses

  • CWE-20: CWE-20 Improper Input Validation

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

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

References