Advisory severityHigh7.5Apache Software Foundation

High [CVE-2026-49270 +1] Apache ActiveMQ: Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All.

This high-severity Apache Software Foundation advisory covers CVE-2026-50750 and CVE-2026-49270 affecting Apache ActiveMQ Broker, Apache ActiveMQ All.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations. This bulletin covers 2 CVEs; its score, affected versions and guidance may apply to different issues within that bulletin.

CVE-2026-50750 Source published Jun 30, 2026Source updated Jul 2, 2026

VulniPulse record published Jul 7, 2026Record updated Jul 7, 2026

CVE-2026-49270 CVE-2026-50750

Affected products & platforms

Apache Software FoundationMessagingActiveMQ

Open source advisory

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Summary

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.

Affected versions

5.19.7 through 5.19.8
6.2.6 through 6.2.7
6.2.6 through 6.2.7.

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Fixed versions

6.2.7
5.19.8

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Mitigation

Upgrade to a fixed release: 6.2.7, 5.19.8. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 3 months ago·verify at source

Sources

Official and corroborating records used to build this advisory.

NVD discovery recordNVD
Independent discovery and scoring cross-reference. Vendor remediation guidance takes precedence. Discovered from the machine-readable feed https://services.nvd.nist.gov/rest/json/cves/2.0; this link opens the NVD record for CVE-2026-49270 instead of the raw feed document.
NIST National Vulnerability Database

Cross-references

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Official resources

ASF Security — reporting & CVE process
Official documentation
The Apache Software Foundation's official security page: how ASF CVEs are published and where each project's advisories live.
Apache project downloads (fixed releases)
Official documentation
Official ASF download tree — fetch the fixed release named in this advisory from the project's directory.

Discussion(0)

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