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CVE-2026-59878

Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All: AMQP NIO negative frame size validation bypass leading to DoS

Published: Jul 28, 2026Updated: Aug 5, 2026 Sources: CVE List NVDCWE-20
7.5HIGH
NVD MITRE
EPSS Score
0.9%
Top 44.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

Improper Input Validation vulnerability in Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All. A remote unauthenticated peer that can reach an exposed AMQP NIO connector can trigger denial-of-service behavior by sending a frame size value. This cause the NIO threads to die and if done rapidly enough can lead to exhaustion of the NIO thread pool denying service to other connections. This issue affects Apache ActiveMQ AMQP: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ: before 5.19.9, from 6.0.0 before 6.2.8; Apache ActiveMQ All: before 5.19.9, from 6.0.0 before 6.2.8. Users are recommended to upgrade to version 5.19.9, 6.2.8, or 6.3.0 which fixes the issue.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-20

Affected Products

Apache Software Foundation
oss-project·USaka apache foundation
Apache ActiveMQ AMQPMixed
Web & CMS Plugins / cms-core
Apache ActiveMQ
Databases / cache-message-queue
Apache ActiveMQ AllLibraryLibrary
OSS Libraries / generic-library
apache
oss-project·USaka apache httpd, apache http server
activemqLibraryLibrary
OSS Libraries / generic-library
activemq allMixed
Web & CMS Plugins / cms-core
activemq amqpMixed
Web & CMS Plugins / cms-core

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
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References

https://lists.apache.org/thread/dnyx4d2oldshcj4lthso7b53y4bqmjvn
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/07/27/7
openwall.com

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