CVE-2026-93492 (GCVE-0-2026-93492)
Vulnerability from cvelistv5
Published
2026-09-18 12:49
Modified
2026-10-16 17:35
Severity ?
5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CWE
Summary
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).
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
Impacted products
Vendor Product Version
Red Hat Red Hat Build of Debezium 3.6     cpe:/a:redhat:debezium:3.6
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   Red Hat Red Hat build of Quarkus 3.27.5.SP2     cpe:/a:redhat:quarkus:3.27::el8
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   Red Hat Red Hat build of Quarkus 3.33.3.SP2     cpe:/a:redhat:quarkus:3.33::el8
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   Red Hat Red Hat AMQ Broker 7     cpe:/a:redhat:amq_broker:7
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   Red Hat Red Hat build of Apache Camel 4 for Quarkus 3     cpe:/a:redhat:camel_quarkus:3
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   Red Hat Red Hat build of Apache Camel for Spring Boot 4     cpe:/a:redhat:camel_spring_boot:4
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   Red Hat Red Hat build of Apicurio Registry 3     cpe:/a:redhat:apicurio_registry:3
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   Red Hat Red Hat Build of Keycloak     cpe:/a:redhat:build_keycloak:
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   Red Hat Red Hat Data Grid 8     cpe:/a:redhat:jboss_data_grid:8
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   Red Hat Red Hat Fuse 7     cpe:/a:redhat:jboss_fuse:7
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   Red Hat Red Hat JBoss Enterprise Application Platform 7     cpe:/a:redhat:jboss_enterprise_application_platform:7
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   Red Hat Red Hat JBoss Enterprise Application Platform 8     cpe:/a:redhat:jboss_enterprise_application_platform:8
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   Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack     cpe:/a:redhat:jbosseapxp
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   Red Hat Red Hat Single Sign-On 7     cpe:/a:redhat:red_hat_single_sign_on:7
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