NVD / CVE Program· CNA apache

CVE-2026-50750: Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: Pre-authentication OpenWire DoS following fix for CVE-2026-49270

HighCVSS 7.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 30/100)

The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
Probability of exploitation in the next 30 days: 0.68% (FIRST EPSS); higher than 53.1% of all records.
Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
According to CISA the attack is automatable: targets can be found by mass scanning.
Fixed version: Apache Software Foundation Apache ActiveMQ 5.19.8, 6.2.7; Apache Software Foundation Apache ActiveMQ All 5.19.8, 6.2.7; Apache Software Foundation Apache ActiveMQ Broker 5.19.8, 6.2.7.

Low priority for now. Upgrade to Apache Software Foundation Apache ActiveMQ 5.19.8, 6.2.7; Apache Software Foundation Apache ActiveMQ All 5.19.8, 6.2.7; Apache Software Foundation Apache ActiveMQ Broker 5.19.8, 6.2.7 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All. Following the fix for CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM. This issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7. Users are recommended to upgrade to version 6.2.7, which fixes the issue.

GHSA-9qj4-v6r6-3wmx

Published: Jun 30, 2026
Updated: Jul 2, 2026
EPSS: 0.6% · 53th percentile
CWE: CWE-400

Report tools

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Action score

Monitor

Low priority for now.

CVSS: 30 / 40 · 7.5 / 10
CISA KEV: 0 / 30 · Not listed
EPSS: 0 / 30 · 0.6%

CISA SSVC decision

Exploitation: none
Automatable: yes
Technical impact: partial

Vulnrichment: CISA's decision-tree inputs.

Get told when this record changes

Not in KEV: no record of exploitation in the wild
No public exploit code on record
A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

Vendor	Product	CPE
apache	activemq	cpe:2.3:a:apache:activemq
apache	activemq broker	cpe:2.3:a:apache:activemq_broker

Versions reported by the vendor

Affected version ranges reported by the assigning authority (apache). Independent of NVD's CPE analysis and usually ahead of it.

Apache Software Foundation Apache ActiveMQ
- 5.19.7 and later · before 5.19.8affected · semver
- 6.2.6 and later · before 6.2.7affected · semver
Apache Software Foundation Apache ActiveMQ All
- 5.19.7 and later · before 5.19.8affected · semver
- 6.2.6 and later · before 6.2.7affected · semver
Apache Software Foundation Apache ActiveMQ Broker
- 5.19.7 and later · before 5.19.8affected · semver
- 6.2.6 and later · before 6.2.7affected · semver

Affected versions · NVD (4)

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

apache activemq5.19.7
apache activemq6.2.6
apache activemq broker5.19.7
apache activemq broker6.2.6

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

Ecosystem	Package	Affected range	Fix
Debian:12	activemq	from 0	—
Maven	org.apache.activemq:activemq-all	from 5.19.7 · before 5.19.8	5.19.8
Maven	org.apache.activemq:activemq-all	from 6.2.6 · before 6.2.7	6.2.7
Maven	org.apache.activemq:activemq-broker	from 5.19.7 · before 5.19.8	5.19.8
Maven	org.apache.activemq:activemq-broker	from 6.2.6 · before 6.2.7	6.2.7
Maven	org.apache.activemq:apache-activemq	from 5.19.7 · before 5.19.8	5.19.8
Maven	org.apache.activemq:apache-activemq	from 6.2.6 · before 6.2.7	6.2.7

Same product

apache: all records

Other highest-scoring records for the same primary product.

CVE-2023-46604Apache ActiveMQ, Apache ActiveMQ Legacy OpenWire Module: Unbounded deserialization causes ActiveMQ to be vulnerable to a remote code execution (RCE) attackKEV
99Now
CVE-2016-3088The Fileserver web application in Apache ActiveMQ 5.x before 5.14.0 allows remote attackers to upload and execute arbitrary files via an…KEV
99Now
CVE-2026-34197Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Authenticated users could perform RCE via Jolokia MBeansKEV
94Now

Published before and after this one in the same product

← EarlierCVE-2026-49434Jun 30, 2026 · Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All: LdapNetworkConnector instantiates denied transports and a remote-properties broker
30Monitor
← EarlierCVE-2026-50734Jun 30, 2026 · Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All: Pre-authentication OpenWire memory-allocation DoS during wire format negotiation
30Monitor
Later →CVE-2026-52760Jun 30, 2026 · Apache ActiveMQ, Apache ActiveMQ Web Console: Stored XSS via Unescaped values in ActiveMQ Web Console
24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / package	Fixed version	Source
Apache Software Foundation Apache ActiveMQ	5.19.8	Vendor (CNA)
Apache Software Foundation Apache ActiveMQ	6.2.7	Vendor (CNA)
Apache Software Foundation Apache ActiveMQ All	5.19.8	Vendor (CNA)
Apache Software Foundation Apache ActiveMQ All	6.2.7	Vendor (CNA)
Apache Software Foundation Apache ActiveMQ Broker	5.19.8	Vendor (CNA)
Apache Software Foundation Apache ActiveMQ Broker	6.2.7	Vendor (CNA)
Maven:org.apache.activemq:activemq-all	5.19.8	Package registry (OSV)
Maven:org.apache.activemq:activemq-all	6.2.7	Package registry (OSV)
Maven:org.apache.activemq:activemq-broker	5.19.8	Package registry (OSV)
Maven:org.apache.activemq:activemq-broker	6.2.7	Package registry (OSV)
Maven:org.apache.activemq:apache-activemq	5.19.8	Package registry (OSV)
Maven:org.apache.activemq:apache-activemq	6.2.7	Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

CVE-2026-3930481 days apartApache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Incorrect handling of TLSv1.3 KeyUpdate can be exploited to cause DoS via…
30Monitor

Not on record for this CVE: EPSS history · patch commit or PR link · researcher credit · public bounty program.

Technical details

Attack conditions

Anyone who can reach it over the internet can trigger it.
No account or password is required.
No user action is required.
No special conditions are required; it is repeatable.

If successful

Confidentiality: none
Integrity: none
Availability: high · the service can be disrupted

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: None
Integrity impact: None
Availability impact: High

Weakness class (CWE)

CWE-400 · Uncontrolled Resource Consumption

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

nvd-secondary

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

The bug in code

The whole CWE-400 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

1function expand(node) {
2  return node.children.map(expand);
3}

Fixed

1const MAX_DEPTH = 32;
2function expand(node, depth = 0) {
3  if (depth > MAX_DEPTH) throw new Error("too deep");
4  return node.children.map((c) => expand(c, depth + 1));
5}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Attack patterns (CAPEC)

ATT&CK techniques

Endpoint Denial of ServiceT1499

Change log (1)

Fix✗ → ✓Sep 28, 2026, 10:10 PM UTC

For records you follow, these changes also arrive as notifications. →

References

lists.apache.org/thread/nhkmbdym61yp6wwy0dny8w1p46sm87kr

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

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