GHSA-5568-6qcg-g7fx

Suggest an improvement
Source
https://github.com/advisories/GHSA-5568-6qcg-g7fx
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-5568-6qcg-g7fx/GHSA-5568-6qcg-g7fx.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-5568-6qcg-g7fx
Aliases
Downstream
CGA (38)
MINI (6)
Published
2026-04-10T12:31:44Z
Modified
2026-09-10T03:50:43Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Apache ActiveMQ: Denial of Service via Out of Memory vulnerability
Details

Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ.

ActiveMQ NIO SSL transports do not correctly handle TLSv1.3 handshake KeyUpdates triggered by clients. This makes it possible for a client to rapidly trigger updates which causes the broker to exhaust all its memory in the SSL engine leading to DoS.

Note: TLS versions before TLSv1.3 (such as TLSv1.2) are broken but are not vulnerable to OOM. Previous TLS versions require a full handshake renegotiation which causes a connection to hang but not OOM. This is fixed as well. This issue affects Apache ActiveMQ Client: before 5.19.4, from 6.0.0 before 6.2.4; Apache ActiveMQ Broker: before 5.19.4, from 6.0.0 before 6.2.4; Apache ActiveMQ: before 5.19.4, from 6.0.0 before 6.2.4.

Users are recommended to upgrade to version 6.2.4 or 5.19.5, which fixes the issue.

Database specific 
{
    "cwe_ids":  [
        "CWE-400"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-04-10T21:01:01Z",
    "nvd_published_at":  "2026-04-10T11:16:23Z",
    "severity":  "HIGH"
}
References

Affected packages

Maven
org.apache.activemq:activemq-client

Package

Name
org.apache.activemq:activemq-client
View open source insights on deps.dev
Purl
pkg:maven/org.apache.activemq/activemq-client

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.19.4

Affected versions

5.*
5.8.0
5.9.0
5.9.1
5.10.0
5.10.1
5.10.2
5.11.0
5.11.1
5.11.2
5.11.3
5.11.4
5.12.0
5.12.1
5.12.2
5.12.3
5.13.0
5.13.1
5.13.2
5.13.3
5.13.4
5.13.5
5.14.0
5.14.1
5.14.2
5.14.3
5.14.4
5.14.5
5.15.0
5.15.1
5.15.2
5.15.3
5.15.4
5.15.5
5.15.6
5.15.7
5.15.8
5.15.9
5.15.10
5.15.11
5.15.12
5.15.13
5.15.14
5.15.15
5.15.16
5.16.0
5.16.1
5.16.2
5.16.3
5.16.4
5.16.5
5.16.6
5.16.7
5.16.8
5.17.0
5.17.1
5.17.2
5.17.3
5.17.4
5.17.5
5.17.6
5.17.7
5.18.0
5.18.1
5.18.2
5.18.3
5.18.4
5.18.5
5.18.6
5.18.7
5.19.0
5.19.1
5.19.2
5.19.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-5568-6qcg-g7fx/GHSA-5568-6qcg-g7fx.json"
org.apache.activemq:activemq-client

Package

Name
org.apache.activemq:activemq-client
View open source insights on deps.dev
Purl
pkg:maven/org.apache.activemq/activemq-client

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.0.0
Fixed
6.2.4

Affected versions

6.*
6.0.0
6.0.1
6.1.0
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.2.0
6.2.1
6.2.2
6.2.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-5568-6qcg-g7fx/GHSA-5568-6qcg-g7fx.json"
org.apache.activemq:activemq-broker

Package

Name
org.apache.activemq:activemq-broker
View open source insights on deps.dev
Purl
pkg:maven/org.apache.activemq/activemq-broker

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.19.4

Affected versions

5.*
5.8.0
5.9.0
5.9.1
5.10.0
5.10.1
5.10.2
5.11.0
5.11.1
5.11.2
5.11.3
5.11.4
5.12.0
5.12.1
5.12.2
5.12.3
5.13.0
5.13.1
5.13.2
5.13.3
5.13.4
5.13.5
5.14.0
5.14.1
5.14.2
5.14.3
5.14.4
5.14.5
5.15.0
5.15.1
5.15.2
5.15.3
5.15.4
5.15.5
5.15.6
5.15.7
5.15.8
5.15.9
5.15.10
5.15.11
5.15.12
5.15.13
5.15.14
5.15.15
5.15.16
5.16.0
5.16.1
5.16.2
5.16.3
5.16.4
5.16.5
5.16.6
5.16.7
5.16.8
5.17.0
5.17.1
5.17.2
5.17.3
5.17.4
5.17.5
5.17.6
5.17.7
5.18.0
5.18.1
5.18.2
5.18.3
5.18.4
5.18.5
5.18.6
5.18.7
5.19.0
5.19.1
5.19.2
5.19.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-5568-6qcg-g7fx/GHSA-5568-6qcg-g7fx.json"
org.apache.activemq:activemq-broker

Package

Name
org.apache.activemq:activemq-broker
View open source insights on deps.dev
Purl
pkg:maven/org.apache.activemq/activemq-broker

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.0.0
Fixed
6.2.4

Affected versions

6.*
6.0.0
6.0.1
6.1.0
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.2.0
6.2.1
6.2.2
6.2.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-5568-6qcg-g7fx/GHSA-5568-6qcg-g7fx.json"
org.apache.activemq:activemq-all

Package

Name
org.apache.activemq:activemq-all
View open source insights on deps.dev
Purl
pkg:maven/org.apache.activemq/activemq-all

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.19.4

Affected versions

4.*
4.1.2
5.*
5.0.0
5.1.0
5.2.0
5.3.0
5.3.1
5.3.2
5.4.0
5.4.1
5.4.2
5.4.3
5.5.0
5.5.1
5.6.0
5.7.0
5.8.0
5.9.0
5.9.1
5.10.0
5.10.1
5.10.2
5.11.0
5.11.1
5.11.2
5.11.3
5.11.4
5.12.0
5.12.1
5.12.2
5.12.3
5.13.0
5.13.1
5.13.2
5.13.3
5.13.4
5.13.5
5.14.0
5.14.1
5.14.2
5.14.3
5.14.4
5.14.5
5.15.0
5.15.1
5.15.2
5.15.3
5.15.4
5.15.5
5.15.6
5.15.7
5.15.8
5.15.9
5.15.10
5.15.11
5.15.12
5.15.13
5.15.14
5.15.15
5.15.16
5.16.0
5.16.1
5.16.2
5.16.3
5.16.4
5.16.5
5.16.6
5.16.7
5.16.8
5.17.0
5.17.1
5.17.2
5.17.3
5.17.4
5.17.5
5.17.6
5.17.7
5.18.0
5.18.1
5.18.2
5.18.3
5.18.4
5.18.5
5.18.6
5.18.7
5.19.0
5.19.1
5.19.2
5.19.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-5568-6qcg-g7fx/GHSA-5568-6qcg-g7fx.json"
org.apache.activemq:activemq-all

Package

Name
org.apache.activemq:activemq-all
View open source insights on deps.dev
Purl
pkg:maven/org.apache.activemq/activemq-all

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.0.0
Fixed
6.2.4

Affected versions

6.*
6.0.0
6.0.1
6.1.0
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.2.0
6.2.1
6.2.2
6.2.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-5568-6qcg-g7fx/GHSA-5568-6qcg-g7fx.json"
org.apache.activemq:apache-activemq

Package

Name
org.apache.activemq:apache-activemq
View open source insights on deps.dev
Purl
pkg:maven/org.apache.activemq/apache-activemq

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
5.19.4

Affected versions

4.*
4.1.1
4.1.2
5.*
5.0.0
5.1.0
5.2.0
5.3.0
5.3.1
5.3.2
5.4.0
5.4.1
5.4.2
5.4.3
5.5.0
5.5.1
5.6.0
5.7.0
5.8.0
5.9.0
5.9.1
5.10.0
5.10.1
5.10.2
5.11.0
5.11.1
5.11.2
5.11.3
5.11.4
5.12.0
5.12.1
5.12.2
5.12.3
5.13.0
5.13.1
5.13.2
5.13.3
5.13.4
5.13.5
5.14.0
5.14.1
5.14.2
5.14.3
5.14.4
5.14.5
5.15.0
5.15.1
5.15.2
5.15.3
5.15.4
5.15.5
5.15.6
5.15.7
5.15.8
5.15.9
5.15.10
5.15.11
5.15.12
5.15.13
5.15.14
5.15.15
5.15.16
5.16.0
5.16.1
5.16.2
5.16.3
5.16.4
5.16.5
5.16.6
5.16.7
5.16.8
5.17.0
5.17.1
5.17.2
5.17.3
5.17.4
5.17.5
5.17.6
5.17.7
5.18.0
5.18.1
5.18.2
5.18.3
5.18.4
5.18.5
5.18.6
5.18.7
5.19.0
5.19.1
5.19.2
5.19.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-5568-6qcg-g7fx/GHSA-5568-6qcg-g7fx.json"
org.apache.activemq:apache-activemq

Package

Name
org.apache.activemq:apache-activemq
View open source insights on deps.dev
Purl
pkg:maven/org.apache.activemq/apache-activemq

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.0.0
Fixed
6.2.4

Affected versions

6.*
6.0.0
6.0.1
6.1.0
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.2.0
6.2.1
6.2.2
6.2.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-5568-6qcg-g7fx/GHSA-5568-6qcg-g7fx.json"