CVE-2026-33227

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Source
https://cve.org/CVERecord?id=CVE-2026-33227
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33227.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33227
Aliases
Downstream
Related
Published
2026-04-07T07:50:58.897Z
Modified
2026-07-15T01:49:12.448933923Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ: Improper Limitation of a Pathname to a Restricted Classpath Directory
Details

Improper validation and restriction of a classpath path name vulnerability in

Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ.

In two instances (when creating a Stomp consumer and also browsing messages in the Web console) an authenticated user provided "key" value could be constructed to traverse the classpath due to path concatenation. As a result, the application is exposed to a classpath path resource loading vulnerability that could potentially be chained together with another attack to lead to exploit.

This issue affects Apache ActiveMQ Client: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ Broker: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ All: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ Web: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ: before 5.19.3, from 6.0.0 before 6.2.2.

Users are recommended to upgrade to version 5.19.4 or 6.2.3, which fixes the issue. Note: 5.19.3 and 6.2.2 also fix this issue, but that is limited to non-Windows environments due to a path separator resolution bug fixed in 5.19.4 and 6.2.3.

Database specific 
{
    "cwe_ids": [
        "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33227.json",
    "cna_assigner": "apache",
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "fixed": "5.19.3"
                },
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.2.2"
                },
                {
                    "fixed": "5.19.3"
                },
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.2.2"
                },
                {
                    "fixed": "5.19.3"
                },
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.2.2"
                },
                {
                    "fixed": "5.19.3"
                },
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.2.2"
                },
                {
                    "fixed": "5.19.3"
                },
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.2.2"
                }
            ]
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "fixed": "5.19.3"
                },
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.2.2"
                },
                {
                    "fixed": "5.19.3"
                },
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.2.2"
                },
                {
                    "fixed": "5.19.3"
                },
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.2.2"
                },
                {
                    "fixed": "5.19.3"
                },
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.2.2"
                },
                {
                    "fixed": "5.19.3"
                },
                {
                    "introduced": "6.0.0"
                },
                {
                    "fixed": "6.2.2"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/apache/activemq

Affected ranges

Type
GIT
Repo
https://github.com/apache/activemq
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
e216f452084ab01641ac5ae8bf7c0d8777c79e9a
Introduced
14bac13f40958c1a1d3d198051eed32facc4abd1
Fixed
ace8c0c4a603bee86baf4785c63e66735e2b8f00
Database specific 
{
    "cpe": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*",
    "source": "CPE_RANGE",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "5.19.3"
        },
        {
            "introduced": "6.0.0"
        },
        {
            "fixed": "6.2.2"
        }
    ]
}

Affected versions

activemq-5.*
activemq-5.10.0
activemq-5.11.0
activemq-5.12.0
activemq-5.13.0
activemq-5.14.0
activemq-5.15.0
activemq-5.16.0
activemq-5.18.0
activemq-5.18.1
activemq-5.18.2
activemq-5.18.3
activemq-5.18.4
activemq-5.18.5
activemq-5.18.6
activemq-5.19.0
activemq-5.19.1
activemq-5.19.2
activemq-5.9.0
activemq-6.*
activemq-6.0.0
activemq-6.1.0
activemq-6.1.1
activemq-6.1.2
activemq-6.2.0
activemq-6.2.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33227.json"