CVE record · CVE-2026-93492

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

CVSS 5.3 MediumEPSS 0.0040 · 34th percentile

Published by the CVE Program (CNA: redhat) at 18 Sept 2026, 12:49 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Red Hat	Red Hat Build of Debezium 3.6 Package name: netty-codec-http2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat build of Quarkus 3.27.5.SP2 Package name: netty-codec-http2 https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	No versions given Other versions: unaffected
Red Hat	Red Hat build of Quarkus 3.33.3.SP2 Package name: netty-codec-http2 https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	No versions given Other versions: unaffected
Red Hat	Red Hat JBoss Enterprise Application Platform 8.1 Package name: netty-codec-http2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat AMQ Broker 7 Package name: netty-codec-http2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unaffected
Red Hat	Red Hat build of Apache Camel 4 for Quarkus 3 Package name: netty-codec-http2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat build of Apache Camel for Spring Boot 4 Package name: netty-codec-http2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat build of Apicurio Registry 3 Package name: netty-codec-http2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat Build of Keycloak Package name: netty-codec-http2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat Data Grid 8 Package name: netty-codec-http2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: affected
Red Hat	Red Hat Fuse 7 Package name: netty-codec-http2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unknown
Red Hat	Red Hat JBoss Enterprise Application Platform 7 Package name: netty-codec-http2 https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	No versions given Other versions: unknown
Red Hat	Red Hat JBoss Enterprise Application Platform 8 Package name: netty-codec-http2 https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	No versions given Other versions: unaffected
Red Hat	Red Hat JBoss Enterprise Application Platform Expansion Pack Package name: netty-codec-http2 https://access.redhat.com/jbossnetwork/restricted/listSoftware.html	No versions given Other versions: affected
Red Hat	Red Hat Single Sign-On 7 Package name: netty-codec-http2 https://access.redhat.com/downloads/content/package-browser/	No versions given Other versions: unknown

Identifiers: CVE-2026-93492
CNA: redhat
Weakness (CWE): CWE-1035
Tags: Red Hat Build of Debezium 3.6
Red Hat build of Quarkus 3.27.5.SP2
Red Hat build of Quarkus 3.33.3.SP2
Red Hat JBoss Enterprise Application Platform 8.1
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
CWE-1035
Published: 18 Sept 2026
Updated: 4 Nov 2026

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
5.3	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L	CNA (redhat)

CISA KEV Not listed.
EPSS 0.0040, the 34th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

18 Sept 2026, 12:49 UTC Confirmed by the CVE List
18 Sept 2026, 13:18 UTC Confirmed by NVD

Sources

References from the CNA

access.redhat.com/errata/RHSA-2026:69440 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:69470 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:83612 vendor-advisoryredhat
access.redhat.com/errata/RHSA-2026:95221 vendor-advisoryredhat
access.redhat.com/security/cve/CVE-2026-93492 vdb-entryredhat
bugzilla.redhat.com/show_bug.cgi?id=2536895 issue-trackingredhat

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.