Resource exhaustion in Red Hat Amq Broker 7
CVE-2026-93491
A flaw was found in Netty's HttpServerCodec. A remote, unauthenticated attacker can exploit this vulnerability by pipelining HTTP/1.1 requests on a single connection and withholding reads. This action causes the methodOverflowQueue to grow without limit, leading to unbounded heap memory consumption and a denial of service due to memory exhaustion.
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-2026-93491?
- CVE-2026-93491 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-2026-93491?
- High severity. CVSS v3 base score is 7.5 out of 10.