WildFly Elytron ASN1 DERDecoder DoS via Excessive Memory Allocation
CVE-2026-10832 Published on September 18, 2026

Org.wildfly.security/wildfly-elytron-asn1: unbounded memory allocation in wildfly elytron asn.1 derdecoder via crafted der payload
A flaw was found in the DERDecoder class within wildfly-elytron-asn1. A remote attacker can exploit this resource exhaustion vulnerability by sending a specially crafted DER (Distinguished Encoding Rules) payload. The decoder attempts to allocate excessive memory based on an inflated length value without proper validation, leading to Java Virtual Machine (JVM) memory exhaustion. This results in a remote Denial of Service (DoS) for services that process untrusted DER/ASN.1 input, including SASL (Simple Authentication and Security Layer) authentication mechanisms and X.500 certificate principal parsing paths.

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Vulnerability Analysis

CVE-2026-10832 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:

NETWORK

Attack Complexity:

HIGH

Privileges Required:

NONE

User Interaction:

NONE

Scope:

UNCHANGED

Confidentiality Impact:

NONE

Integrity Impact:

NONE

Availability Impact:

HIGH

Timeline

2026-06-04

Reported to Red Hat.

2026-09-18

Made public. 106 days later.

Weakness Type

Allocation of Resources Without Limits or Throttling

The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

Products Associated with CVE-2026-10832

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Red Hat Cryostat

Red Hat Camel Quarkus

Red Hat Apache Camel Hawtio

Red Hat Debezium

Red Hat Build Keycloak

Red Hat Quarkus

Red Hat Jboss Data Grid

Red Hat Jboss Fuse

Red Hat Jboss Enterprise Application Platform

Red Hat Jbosseapxp

Red Hat Lightspeed For Runtimes

Red Hat Jboss Enterprise Bpms Platform

Red Hat Single Sign On

Affected Versions

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.40.0-8.redhat_00024.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:4.1.7-1.SP1_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.0.5-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:1.85.0-1.redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:1.2.7-1.redhat_00002.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:801.8.0-1.GA_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:6.6.54-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:4.1.5-5.redhat_00008.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:3.0.22-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.18.9-1.redhat_00003.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.18.9-1.redhat_00003.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.18.9-1.redhat_00003.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.18.9-1.redhat_00003.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.18.9-1.redhat_00003.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.18.9-1.redhat_00003.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.18.9-1.redhat_00003.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:4.0.5-1.redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:4.0.7-4.redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.1.0-1.redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:3.6.3-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:5.0.31-1.SP2_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:3.1.0-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.2.0-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:7.4.0-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:3.0.1-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:5.1.0-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:4.0.11-2.SP1_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.25.4-1.redhat_00003.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:3.2.2-1.redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:4.1.136-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:4.1.136-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:9.37.4-1.redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:1.1.9-1.redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:3.0.6-1.redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.0.18-1.redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.3.26-2.SP3_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:8.1.8-9.GA_redhat_00006.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.6.11-1.Final_redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:8.1.1-12.GA_redhat_00048.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:2.3.2-1.redhat_00001.1.el10eap and below * is unaffected.

Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 10:

Version 0:3.0.6-1.redhat_00001.1.el10eap and below * is unaffected.