Description (CNA)
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).
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Red Hat / Red Hat Build of Debezium 3.6 | unaffected |
| Red Hat / Red Hat build of Quarkus 3.27.5.SP2 | unaffected |
| Red Hat / Red Hat build of Quarkus 3.33.3.SP2 | unaffected |
| Red Hat / Red Hat AMQ Broker 7 | unaffected |
| Red Hat / Red Hat build of Apache Camel 4 for Quarkus 3 | affected |
| Red Hat / Red Hat build of Apache Camel for Spring Boot 4 | affected |
| Red Hat / Red Hat build of Apicurio Registry 3 | affected |
| Red Hat / Red Hat Build of Keycloak | affected |
| Red Hat / Red Hat Data Grid 8 | affected |
| Red Hat / Red Hat Fuse 7 | unknown |
| Red Hat / Red Hat JBoss Enterprise Application Platform 7 | unknown |
| Red Hat / Red Hat JBoss Enterprise Application Platform 8 | unaffected |
| Red Hat / Red Hat JBoss Enterprise Application Platform Expansion Pack | affected |
| Red Hat / Red Hat Single Sign-On 7 | unknown |
CWE
CWE-1035
References
- https://access.redhat.com/errata/RHSA-2026:69440
- https://access.redhat.com/errata/RHSA-2026:69470
- https://access.redhat.com/errata/RHSA-2026:83612
- https://access.redhat.com/security/cve/CVE-2026-93492
- https://bugzilla.redhat.com/show_bug.cgi?id=2536895
ADP enrichment
No English description supplied.
No references supplied.