Resource exhaustion in Red Hat Amq Broker 7
CVE-2026-93488
A flaw was found in Netty. SpdySessionHandler accepts an unlimited number of concurrent remote-initiated streams because localConcurrentStreams defaults to Integer.MAX_VALUE and the handler provides no API to change it. A remote peer can open a SPDY connection and send a large number of SYN_STREAM frames with FLAG_FIN=0, causing unbounded heap and direct memory allocation that can lead to JVM OutOfMemoryError and a denial of service.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
- secalert@redhat.com (x_refsource_REDHAT, issue-tracking)
- secalert@redhat.com
- secalert@redhat.com
Frequently asked questions
- What is CVE-2026-93488?
- CVE-2026-93488 is a high-severity vulnerability in Red Hat Amq Broker 7, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-09-18.
- How severe is CVE-2026-93488?
- High severity. CVSS v3 base score is 7.5 out of 10.