CVE-2026-59878
Apache ActiveMQ AMQP, Apache ActiveMQ, Apache ActiveMQ All: AMQP NIO negative frame size validation bypass leading to DoS
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.
INFO
Published Date :
July 28, 2026, 2:16 p.m.
Last Modified :
July 28, 2026, 4:20 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Upgrade Apache ActiveMQ to version 5.19.9 or later.
- Upgrade Apache ActiveMQ to version 6.2.8 or later.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-59878.
| URL | Resource |
|---|---|
| https://lists.apache.org/thread/dnyx4d2oldshcj4lthso7b53y4bqmjvn | |
| http://www.openwall.com/lists/oss-security/2026/07/27/7 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-59878 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-59878
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-59878 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-59878 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 28, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added SSVC {'id': 'CVE-2026-59878', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-28T14:04:48.067427Z'} -
New CVE Received by [email protected]
Jul. 28, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache ActiveMQ AMQP', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.19.9', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.0.0', 'lessThan': '6.2.8', 'versionType': 'semver'}], 'packageName': 'org.apache.activemq:activemq-amqp', 'collectionURL': 'https://repo.maven.apache.org/maven2', 'defaultStatus': 'unaffected'}, {'vendor': 'Apache Software Foundation', 'product': 'Apache ActiveMQ', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.19.9', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.0.0', 'lessThan': '6.2.8', 'versionType': 'semver'}], 'packageName': 'org.apache.activemq:apache-activemq', 'collectionURL': 'https://repo.maven.apache.org/maven2', 'defaultStatus': 'unaffected'}, {'vendor': 'Apache Software Foundation', 'product': 'Apache ActiveMQ All', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '5.19.9', 'versionType': 'semver'}, {'status': 'affected', 'version': '6.0.0', 'lessThan': '6.2.8', 'versionType': 'semver'}], 'packageName': 'org.apache.activemq:activemq-all', 'collectionURL': 'https://repo.maven.apache.org/maven2', 'defaultStatus': 'unaffected'}] Added 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. Added CWE CWE-20 Added Reference https://lists.apache.org/thread/dnyx4d2oldshcj4lthso7b53y4bqmjvn -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Jul. 28, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/07/27/7