Medium 5.3Published Sep 18, 2026

CVE-2026-93492Io.netty/netty-codec-http2: netty: http/2 hpackencoder dos with large table size

Updated under an hour ago (Oct 27, 2026, 10:23 PM ET)

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It affects Red Hat Build of Debezium 3.6 and 11 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Red Hat Build of Debezium 3.6

Exploited in the last 30 days

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).

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-1035
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: redhat
NVD analysis: Awaiting Analysis
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Red Hat Red Hat Build of Debezium 3.6 redhat:debezium	3.6	CNA record
Red Hat Red Hat build of Quarkus 3.27.5.SP2 redhat:quarkus	3.27	CNA record
Red Hat Red Hat AMQ Broker 7 redhat:amq_broker	7	CNA record
Red Hat Red Hat build of Apache Camel 4 for Quarkus 3 redhat:camel_quarkus	3	CNA record
Red Hat Red Hat build of Apache Camel for Spring Boot 4 redhat:camel_spring_boot	4	CNA record
Red Hat Red Hat build of Apicurio Registry 3 redhat:apicurio_registry	3	CNA record
Red Hat Red Hat Build of Keycloak redhat:build_keycloak	All versions	CNA record
Red Hat Red Hat Data Grid 8 redhat:jboss_data_grid	8	CNA record
Red Hat Red Hat Fuse 7 redhat:jboss_fuse	7	CNA record
Red Hat Red Hat JBoss Enterprise Application Platform 7 redhat:jboss_enterprise_application_platform	7	CNA record
1–10 of 12

References

References

https://access.redhat.com/errata/RHSA-2026:69440	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:69470	vendor-advisory, x-refsource-redhat
https://access.redhat.com/errata/RHSA-2026:83612	vendor-advisory, x-refsource-redhat
https://access.redhat.com/security/cve/CVE-2026-93492	vdb-entry, x-refsource-redhat
https://bugzilla.redhat.com/show_bug.cgi?id=2536895	issue-tracking, x-refsource-redhat

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.