Riskcovery

CVE-2026-49432

Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp: STOMP negative content-length enables denial of service

State
Published
Severity
7.5 High
Published
Jun 30, 2026
Updated
Jun 30, 2026
Reserved
May 29, 2026

Read the record on cve.org

Description

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.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

  • CWE-20 Improper Input Validation

Affected Products

ProductVersions
Apache ActiveMQApache Software Foundation
  • before 5.19.8Affected
  • 6.0.0 to before 6.2.7Affected
Apache ActiveMQ AllApache Software Foundation
  • before 5.19.8Affected
  • 6.0.0 to before 6.2.7Affected
Apache ActiveMQ StompApache Software Foundation
  • before 5.19.8Affected
  • 6.0.0 to before 6.2.7Affected

References

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