HighCVE-2026-101292

Artemis-core-client: unsafe reflection in apache activemq artemis federation message deserialization (CVE-2026-101292)

Published 28.09.2026Last modified 20.10.2026Sources: Red Hat, CVE.org

What is affected, what to do

Update Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 to version 0:2.16.0-22.redhat_00057.1.el7eap, Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 to version 0:2.3.14-11.SP11_redhat_00001.1.el7eap, Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 to version 0:1.5.26-2.Final_redhat_00001.1.el7eap.

Affected: Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:2.16.0-22.redhat_00057.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:2.3.14-11.SP11_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:1.5.26-2.Final_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:2.18.8-1.redhat_00003.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:5.0.31-3.SP2_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:1.10.0-46.Final_redhat_00044.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:4.1.135-1.Final_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:2.5.5-30.SP12_redhat_00020.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:2.5.5-24.SP12_redhat_00016.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:2.2.40-2.SP3_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 lt *..0:7.4.25-2.GA_redhat_00001.1.el7eap
Fixed in: Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.16.0-22.redhat_00057.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.3.14-11.SP11_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:1.5.26-2.Final_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.18.8-1.redhat_00003.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:5.0.31-3.SP2_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:1.10.0-46.Final_redhat_00044.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:4.1.135-1.Final_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.5.5-30.SP12_redhat_00020.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.5.5-24.SP12_redhat_00016.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:2.2.40-2.SP3_redhat_00001.1.el7eap
Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 0:7.4.25-2.GA_redhat_00001.1.el7eap

Not sure whether and how you are affected? Ask a question about this vulnerability

Metrics

8.2

Priority

XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

Source: NVD, CVSS v3

8.2

CVSS v3

Severity High on the scale from 0 to 10.

Source: Red Hat, CVE.org

0.5 %

EPSS score

Low — model estimates < 1% exploitation likelihood.

Source: FIRST EPSS, percentile 44.3

Show all metrics

Severity: High
Priority (0–325) The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first? Read in glossary: 86.31 Methodology
Exploit maturity An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack. Read in glossary: no public PoC known
XIEM Effective CVSS XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command. Read in glossary: 8.2 Methodology
CVSS v3 CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions. Read in glossary: 8.2
EPSS score The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“. Read in glossary: 0.5 %; Low — model estimates < 1% exploitation likelihood.
EPSS percentile The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking. Read in glossary: 44.3; High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
KEV status The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching. Read in glossary: —
Published: 28.09.2026
CISA assessment (SSVC): Exploitation: none known · automatable · Technical impact: partial; Source: CISA Vulnrichment, as of 28 September 2026
CWE CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect. Read in glossary: CWE-470

Detection rules

No NEOSEC detection rule is available for this vulnerability yet.

Classification under NIS2 and CRA

Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

NIS2 NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management. Read in glossary: High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
CRA The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates. Read in glossary: From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001 ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security. Read in glossary: Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

Description

Apache ActiveMQ Artemis before 2.34.0 contains an unsafe reflection vulnerability in FederationStreamConnectMessage.getFederationPolicy(). The method calls Class.forName(clazz).getConstructor().newInstance() where clazz is read directly from the CORE protocol wire buffer without type validation. An authenticated federation peer can send a FEDERATION_DOWNSTREAM_CONNECT packet with a crafted class name, causing the broker to load and instantiate arbitrary classes visible to the Artemis module classloader. Static initializers (<clinit>) and no-argument constructors (<init>()) execute as side effects before the type cast, enabling denial of service via system-property poisoning, out-of-memory conditions via classloading, or broker state manipulation.

Source: redhat_csaf, cvelistv5, NVD (NIST)

Affected products

The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

Affected products
		Affected versions	Fixed in
Red Hat	Red Hat AMQ Broker 7	`—`	—
Red Hat	Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7	`< 0:4.1.135-1.Final_redhat_00001.1.el7eap` `< 0:2.18.8-1.redhat_00003.1.el7eap` `< 0:2.5.5-24.SP12_redhat_00016.1.el7eap` `< 0:1.10.0-46.Final_redhat_00044.1.el7eap` `< 0:1.5.26-2.Final_redhat_00001.1.el7eap` `< 0:2.2.40-2.SP3_redhat_00001.1.el7eap` `< 0:2.3.14-11.SP11_redhat_00001.1.el7eap` `< 0:2.5.5-30.SP12_redhat_00020.1.el7eap` `< 0:5.0.31-3.SP2_redhat_00001.1.el7eap` `< 0:7.4.25-2.GA_redhat_00001.1.el7eap` `< 0:2.16.0-22.redhat_00057.1.el7eap`	`0:4.1.135-1.Final_redhat_00001.1.el7eap` `0:2.18.8-1.redhat_00003.1.el7eap` `0:2.5.5-24.SP12_redhat_00016.1.el7eap` `0:1.10.0-46.Final_redhat_00044.1.el7eap` `0:1.5.26-2.Final_redhat_00001.1.el7eap` `0:2.2.40-2.SP3_redhat_00001.1.el7eap` `0:2.3.14-11.SP11_redhat_00001.1.el7eap` `0:2.5.5-30.SP12_redhat_00020.1.el7eap` `0:5.0.31-3.SP2_redhat_00001.1.el7eap` `0:7.4.25-2.GA_redhat_00001.1.el7eap` `0:2.16.0-22.redhat_00057.1.el7eap`
Red Hat	Red Hat JBoss Enterprise Application Platform 7.4.25	`—`	—

Vendors and products

Weakness classes (CWE)

CWE-470Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')
Base
The product uses external input with reflection to select which classes or code to use, but it does not sufficiently prevent the input from selecting improper classes or code.
Entry at MITRE CWE-470

References & sources

access.redhat.comRHSA-2026:53644Technical description, x_refsource_REDHAT
access.redhat.comsecurity/cve/CVE-2026-101292Vulnerability database, x_refsource_REDHAT
bugzilla.redhat.comRHBZ#2482963Issue tracking, x_refsource_REDHAT
access.redhat.comRHSA-2026:53806Vendor advisory, x_refsource_REDHAT

Changes to this CVE

Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).

20.10.2026Record modifiedRed Hat

1 individual change: Affected versions (publisher)

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/101xxx/CVE-2026-101292.json">CVE-2026-101292</a>

Source identifier: secalert@redhat.com

20.10.2026Record modifiedRed Hat

1 individual change: Affected versions (publisher)

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/101xxx/CVE-2026-101292.json">CVE-2026-101292</a>

Source identifier: secalert@redhat.com

29.09.2026Record modifiedRed Hat

New references:

https://access.redhat.com/errata/RHSA-2026:53806

Show 2 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Affected versions (publisher)	added	—	Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/101xxx/CVE-2026-101292.json">CVE-2026-101292</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:53806

Source identifier: secalert@redhat.com

28.09.2026Record modifiedCISA ADP

CISA assessment (SSVC): exploitation: none known, automatable: yes

Show the original change

Individual changes of this event as published by NVD
Type	Action	Before	After
SSVC assessment	added	—	{"id":"CVE-2026-101292","role":"CISA Coordinator","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"version":"2.0.3","timestamp":"2026-09-28T13:10:25.501009Z"}

Source identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

28.09.2026ReceivedRed Hat

CVSS V3.1: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Weakness type: CWE-470

Description added or changed

New references:

Show 7 original changes

Individual changes of this event as published by NVD
Type	Action	Before	After
Description	added	—	Apache ActiveMQ Artemis before 2.34.0 contains an unsafe reflection vulnerability in FederationStreamConnectMessage.getFederationPolicy(). The method calls Class.forName(clazz).getConstructor().newInstance() where clazz is read directly from the CORE protocol wire buffer without type validation. An authenticated federation peer can send a FEDERATION_DOWNSTREAM_CONNECT packet with a crafted class name, causing the broker to load and instantiate arbitrary classes visible to the Artemis module classloader. Static initializers (<clinit>) and no-argument constructors (<init>()) execute as side effects before the type cast, enabling denial of service via system-property poisoning, out-of-memory conditions via classloading, or broker state manipulation.
CVSS	added	—	AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Weakness type (CWE)	added	—	CWE-470
Affected versions (publisher)	added	—	New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/101xxx/CVE-2026-101292.json">CVE-2026-101292</a>
Reference	added	—	https://access.redhat.com/errata/RHSA-2026:53644
Reference	added	—	https://access.redhat.com/security/cve/CVE-2026-101292
Reference	added	—	https://bugzilla.redhat.com/show_bug.cgi?id=2482963

Source identifier: secalert@redhat.com

Embed badge

Show the severity and KEV status of this vulnerability on your site – with a link back here. The image is updated hourly.

<a href="https://intel.neosec.eu/en/cve/CVE-2026-101292"><img src="https://intel.neosec.eu/badge/cve/CVE-2026-101292.svg?lang=en" alt="CVE-2026-101292 – NEOSEC Intel" height="20"></a>