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CVE-2026-50734

Description
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All. An unauthenticated network attacker can cause a broker DoS by sending a crafted WireFormatInfo frame with a malicious large size value. The value is not validate and causes the broker to attempt allocation during pre-auth negotiation which can trigger OOM and crash the broker. This issue affects Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7. Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.

Metadata

CVE ID
CVE-2026-50734
State
PUBLISHED
Assigner
apache
Reserved
2026-06-05 17:01 UTC
Published
2026-06-30 09:53 UTC
Last updated
2026-06-30 11:06 UTC
Primary CWE
CWE-789
CWE-789 Memory Allocation with Excessive Size Value
Vendor / Product
Apache Software Foundation / Apache ActiveMQ Client
Sources
cve.org  ·  NVD

Severity & Metrics

No CVSS data available.

Affected products (3)
VendorProductPlatformVersions
Apache Software Foundation Apache ActiveMQ — 0 < 5.19.8, 6.0.0 < 6.2.7
Apache Software Foundation Apache ActiveMQ All — 0 < 5.19.8, 6.0.0 < 6.2.7
Apache Software Foundation Apache ActiveMQ Client — 0 < 5.19.8, 6.0.0 < 6.2.7
Weakness (CWE)
CWESourceDescription
CWE-789 cna CWE-789 Memory Allocation with Excessive Size Value
References (1)
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