CASCACascade Atlas

Evidence dossier

CVE-2026-34197

Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Authenticated users could perform RCE via Jolokia MBeans

Exploited in the wild (CISA KEV since Apr 16, 2026). CVE Program source reports CVSS 3.1 8.8. EPSS estimates 97.2% exploit likelihood as of Jul 31, 2026.

81.7–92.5Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ. Apache ActiveMQ Classic exposes the Jolokia JMX-HTTP bridge at /api/jolokia/ on the web console. The default Jolokia access policy permits exec operations on all ActiveMQ MBeans (org.apache.activemq:*), including BrokerService.addNetworkConnector(String) and BrokerService.addConnector(String). An authenticated attacker can invoke these operations with a crafted discovery URI that triggers the VM transport's brokerConfig parameter to load a remote Spring XML application context using ResourceXmlApplicationContext. Because Spring's ResourceXmlApplicationContext instantiates all singleton beans before the BrokerService validates the configuration, arbitrary code execution occurs on the broker's JVM through bean factory methods such as Runtime.exec(). This issue affects Apache ActiveMQ Broker: before 5.19.4, from 6.0.0 before 6.2.3; Apache ActiveMQ All: before 5.19.4, from 6.0.0 before 6.2.3; Apache ActiveMQ: before 5.19.4, from 6.0.0 before 6.2.3. Users are recommended to upgrade to version 5.19.4 or 6.2.3, which fixes the issue

State
PUBLISHED
Published
Apr 7, 2026
Updated
Aug 4, 2026
Evidence coverage
85%

Evidence chronology

What was known when

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  1. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Apache ActiveMQ Improper Input Validation Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Apache ActiveMQ Improper Input Validation Vulnerability
    Original evidence ↗
  2. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 97.22% probability · 99.89th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.972200000000; percentile 0.998880000000
    Original evidence ↗
  3. Source dateSource date omittedFirst observed by CASCA
    apache

    Record text: Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Authenticated users could perform RCE via Jolokia MBeans

    Inspect raw assertion
    Field
    container
    Value
    Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Authenticated users could perform RCE via Jolokia MBeans
    Original evidence ↗
  4. Source dateSource date omittedFirst observed by CASCA
    CISA-ADP

    Record text: CISA ADP Vulnrichment

    Inspect raw assertion
    Field
    container
    Value
    CISA ADP Vulnrichment
    Original evidence ↗
  5. Source dateSource date omittedFirst observed by CASCA
    CVE Program

    Record text: CVE Program Container

    Inspect raw assertion
    Field
    container
    Value
    CVE Program Container
    Original evidence ↗
  6. Source dateSource date omittedFirst observed by CASCA
    redhat-SADP

    Record text: org.apache.activemq/activemq-broker: org.apache.activemq/activemq-all: Apache ActiveMQ: RCE via crafted discovery URI in Jolokia JMX-HTTP bridge

    Inspect raw assertion
    Field
    container
    Value
    org.apache.activemq/activemq-broker: org.apache.activemq/activemq-all: Apache ActiveMQ: RCE via crafted discovery URI in Jolokia JMX-HTTP bridge
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Apr 16, 2026 · first observed Jul 19, 2026

Exploit likelihood97.22%

FIRST EPSS · score date Jul 31, 2026 · 99.9th percentile · first observed Aug 1, 2026

SeverityCVSS 8.8

CVE Program source · CVSS 3.1 · first observed Aug 4, 2026 · same-version scores align in this snapshot

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1
Exploitation statusEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Aug 27, 2026
Resolution
None
Affected productsSource-reported scope

The cited source assertion is retained while canonical product linkage remains open.

Revision
casca-factor-d-obligations-v1
Cutoff
Aug 27, 2026
Resolution
Resolve identity

Source comparison

Who said what

CISA KEVOriginal assertion
Exploitation cataloged

Apache ActiveMQ Improper Input Validation Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Apache ActiveMQ Improper Input Validation Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

97.22% probability · 99.89th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.972200000000; percentile 0.998880000000
Source dateFirst observed by CASCAOriginal evidence ↗
apacheOriginal assertion
Record text

Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Authenticated users could perform RCE via Jolokia MBeans

Inspect raw assertion
Field
container
Value
Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Authenticated users could perform RCE via Jolokia MBeans
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA-ADPIndependent enrichment
Record text

CISA ADP Vulnrichment

Inspect raw assertion
Field
container
Value
CISA ADP Vulnrichment
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CVE ProgramDerivative copy
Record text

CVE Program Container

Inspect raw assertion
Field
container
Value
CVE Program Container
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
redhat-SADPSource-declared origin
Record text

org.apache.activemq/activemq-broker: org.apache.activemq/activemq-all: Apache ActiveMQ: RCE via crafted discovery URI in Jolokia JMX-HTTP bridge

Inspect raw assertion
Field
container
Value
org.apache.activemq/activemq-broker: org.apache.activemq/activemq-all: Apache ActiveMQ: RCE via crafted discovery URI in Jolokia JMX-HTTP bridge
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
4Underlying assertions
2Canonical products
4Target assertions
0Constraint assertions

Grouped from 1 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.

Identity source boundaries
  • Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
  • Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

14 scope groups

apache · source assertedApache Software FoundationApache ActiveMQDirect source scope
Affected: 0 to before 5.19.4 (semver comparison)Affected: 6.0.0 to before 6.2.3 (semver comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "lessThan": "5.19.4", "versionType": "semver"}, {"status": "affected", "version": "6.0.0", "lessThan": "6.2.3", "versionType": "semver"}]
apache · source assertedApache Software FoundationApache ActiveMQ AllDirect source scope
Affected: 0 to before 5.19.4 (semver comparison)Affected: 6.0.0 to before 6.2.3 (semver comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "lessThan": "5.19.4", "versionType": "semver"}, {"status": "affected", "version": "6.0.0", "lessThan": "6.2.3", "versionType": "semver"}]
apache · source assertedApache Software FoundationApache ActiveMQ BrokerDirect source scope
Affected: 0 to before 5.19.4 (semver comparison)Affected: 6.0.0 to before 6.2.3 (semver comparison)
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "0", "lessThan": "5.19.4", "versionType": "semver"}, {"status": "affected", "version": "6.0.0", "lessThan": "6.2.3", "versionType": "semver"}]
redhat-SADP · source assertedRed HatRed Hat AMQ Broker 7Direct source scope
Version details are available in the raw assertion
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[]
redhat-SADP · source assertedRed HatRed Hat Data Grid 8Direct source scope
Version details are available in the raw assertion
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[]
redhat-SADP · source assertedRed HatRed Hat Enterprise Linux 8Direct source scope
Version details are available in the raw assertion
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[]
redhat-SADP · source assertedRed HatRed Hat Enterprise Linux 9Direct source scope
Version details are available in the raw assertion
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[]
redhat-SADP · source assertedRed HatRed Hat Fuse 7Direct source scope
Version details are available in the raw assertion
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[]
redhat-SADP · source assertedRed HatRed Hat Fuse 7Direct source scope
Version details are available in the raw assertion
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[]
redhat-SADP · source assertedRed HatRed Hat JBoss Enterprise Application Platform 7Direct source scope
Version details are available in the raw assertion
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[]
redhat-SADP · source assertedRed HatRed Hat JBoss Enterprise Application Platform 8Direct source scope
Version details are available in the raw assertion
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[]
redhat-SADP · source assertedRed HatRed Hat JBoss Enterprise Application Platform Expansion PackDirect source scope
Version details are available in the raw assertion
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[]
NVD CPE · APPLICATIONapacheactivemqVulnerable target · 2 assertions
Any version (unconstrained) (< 5.19.4); Any version (unconstrained) (>= 6.0.0, < 6.2.3)Canonical identity product-9dbaf4d340c9a3ea99b72c4caa7f1c532772beee338b516f4a365c8dc60a7707Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    through excluding 5.19.4
    Match ID
    83ef7dd6-c3a9-4561-adc0-1e6ed5429307
  2. cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 1
    Logic
    OR
    Version bounds
    from including 6.0.0; through excluding 6.2.3
    Match ID
    4c156202-d239-4ecd-b409-2c22e063f030
NVD CPE · APPLICATIONapacheactivemq_brokerVulnerable target · 2 assertions
Any version (unconstrained) (< 5.19.4); Any version (unconstrained) (>= 6.0.0, < 6.2.3)Canonical identity product-dcb4dc3884c999513388fbc98bd1a8914fe857eecdb0db340f2856fa30579472Linked exact
Scope supported
Inspect raw assertions
  1. cpe:2.3:a:apache:activemq_broker:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 2
    Logic
    OR
    Version bounds
    through excluding 5.19.4
    Match ID
    ecef15dd-10e8-40a4-897b-3da7f12e2c07
  2. cpe:2.3:a:apache:activemq_broker:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 3
    Logic
    OR
    Version bounds
    from including 6.0.0; through excluding 6.2.3
    Match ID
    1623b4ed-853e-4562-ad04-804aaf87d937

Affected-product evidence

Accepted scope and product mapping

0 canonical links · 2 source-reported links

Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Direct cve affected
Assertions
12
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
04f7a26f-c3ca-422c-8b01-d4553462d9d811fc0657-8797-480e-b81f-d50ae8b027991c3a0a6e-3bcf-4c51-b86a-ca6b86b86cee357667dd-28f2-4ad0-aca1-78640575553d4cbf7673-9905-414c-ad3e-b5ddca84050591e1fb63-ed1c-49ab-a3e8-f03c2ddc114a9f1df15b-77ba-4502-9614-886852d13465c5a31c75-c230-4647-a35d-9b0649674936cf794e83-97ac-4fb1-9721-d55cb39e2b63d76da225-0f4a-4d8c-b8e8-3ea3a5ec7c0bd9020ca2-bdec-4de8-a1ec-f086a45eb9bfe72e85e8-2baa-4f6f-a72f-cc70a7833494
Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Nvd cpe vulnerable target
Assertions
4
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
2e5e63d8-9681-4c93-8cb3-8ec64522c7fb2ff02fe9-07fb-4864-837f-13b626a4bcd69e998eae-110e-412c-a70e-71469f478478bafd7c0f-730f-4b2c-9d38-0d10a5becbd5

Assessments

CVSS by origin

8.8
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8
CISA-ADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8
redhat-SADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

8.8Priority eligible

CISA-ADP

CVSS 3.1 · Secondary · Independent enrichment · rank 2

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
8.8
Decision reason
Evidence supported
Policy
casca-direct-cvss-eligibility-v1
8.8Display only

redhat-SADP

CVSS 3.1 · Secondary · Unknown origin · rank 2

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
8.8
Decision reason
Policy deferred
Policy
casca-direct-cvss-eligibility-v1

Assessments are retained side by side under closed precedence. Cascade never averages CVSS.

Evidence boundaries

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; remaining scope stays source-scoped.
  • NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
  • OSV aggregation and OSV-converted NVD material are not independent corroboration.
  • Red Hat facts are vendor assertions for the exact supplied products.
  • Nonmembership and not-yet-observed states are not proof of safety.