Vulnerability in Red Hat Amq Broker 7
CVE-2026-93492
A flaw was found in Netty's HTTP/2 HpackEncoder. A remote attacker can exploit this by sending HTTP/2 SETTINGS frames with a very large MAX_HEADER_TABLE_SIZE. This causes the HpackEncoder to store an excessive number of unique headers, leading to increased CPU usage and memory consumption, ultimately resulting in a Denial of Service (DoS).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.004 (31.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Red Hat Amq Broker 7
- Red Hat Build Of Apache Camel 4 For Quarkus 3
- Red Hat Build Of Apache Camel For Spring Boot 4
- Red Hat Build Of Apicurio Registry 3
- Red Hat Build Of Debezium 3
- Red Hat Build Of Keycloak
- Red Hat Build Of Quarkus
- Red Hat Data Grid 8
- Red Hat Fuse 7
- Red Hat Jboss Enterprise Application Platform 7
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-93492 (vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking)
- access.redhat.com/errata/RHSA-2026:69470 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:69440 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:83612 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-93492?
- CVE-2026-93492 is a medium-severity vulnerability in Red Hat Amq Broker 7, classified under CWE-1035. CVSS score: 5.3/10. Published 2026-09-18.
- How severe is CVE-2026-93492?
- Medium severity. CVSS v3 base score is 5.3 out of 10.