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Vulnerability details

CVE-2026-49432

Apache Software Foundation Apache ActiveMQApache Software Foundation Apache ActiveMQ AllApache Software Foundation Apache ActiveMQ Stomp

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

CVSS 3.1
7.5High

Official 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.

CVSS scores

ScoreVersionSourceVector
7.5High 3.1 CISA ADP / Vulnrichment (CISA-ADP) CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

VendorProductVersionsSource
Apache Software Foundation Apache ActiveMQ v < 5.19.8 CVEProject cvelistV5 (CNA)
Apache Software Foundation Apache ActiveMQ 6.0.0 ≤ v < 6.2.7 CVEProject cvelistV5 (CNA)
Apache Software Foundation Apache ActiveMQ All v < 5.19.8 CVEProject cvelistV5 (CNA)
Apache Software Foundation Apache ActiveMQ All 6.0.0 ≤ v < 6.2.7 CVEProject cvelistV5 (CNA)
Apache Software Foundation Apache ActiveMQ Stomp v < 5.19.8 CVEProject cvelistV5 (CNA)
Apache Software Foundation Apache ActiveMQ Stomp 6.0.0 ≤ v < 6.2.7 CVEProject cvelistV5 (CNA)

References and advisories

2
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Details

Published
2026-06-30
Last updated
2026-06-30
State
Published
Assigner (CNA)
apache

Exploit prediction (EPSS)

0.78%
Probability of exploitation in 30 days
56.2%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
Yes
Exploitation
None
Technical impact
Partial

Weaknesses (CWE)

  • CWE-20
    Improper Input Validation