Bug 2495076 - CVE-2026-50734 activemq-cpp: Apache ActiveMQ: Denial of Service via crafted WireFormatInfo frame [fedora-all]
Summary: CVE-2026-50734 activemq-cpp: Apache ActiveMQ: Denial of Service via crafted W...
Keywords:
Status: NEW
Alias: None
Product: Fedora
Classification: Fedora
Component: activemq-cpp
Version: rawhide
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: ---
Assignee: Jonathan Wright
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard: {"flaws": ["5361cddf-bf2d-4e38-8acc-3...
Depends On:
Blocks: CVE-2026-50734
TreeView+ depends on / blocked
 
Reported: 2026-06-30 17:37 UTC by Jon Weiser
Modified: 2026-06-30 17:37 UTC (History)
1 user (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Type: ---
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Description Jon Weiser 2026-06-30 17:37:35 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

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.
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