---
id: CVE-2026-10832
title: A flaw was found in the DERDecoder class within wildfly-elytron-asn1
summary: >-
  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…
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-770
vendor: Red Hat
product: wildfly-elytron-asn1
affected:
  - wildfly-elytron-asn1 (all versions)
  - wildfly-elytron-asn1 (all versions)
  - wildfly-elytron-asn1 (all versions)
  - wildfly-elytron-asn1 (all versions)
  - rhbk/keycloak-rhel9 (all versions)
  - rhbk-openshift-rhel9/rhbk-openshift-rhel9 (all versions)
  - wildfly-elytron-asn1 (all versions)
  - wildfly-elytron-asn1 (all versions)
  - wildfly-elytron-asn1 (all versions)
  - wildfly-elytron-asn1 (all versions)
  - wildfly-elytron-asn1 (all versions)
  - wildfly-elytron-asn1 (all versions)
  - wildfly-elytron-asn1 (all versions)
  - rh-lightspeed-runtimes/runtimes-agent-init-rhel9 (all versions)
  - wildfly-elytron-asn1 (all versions)
  - wildfly-elytron-asn1 (all versions)
published: '2026-09-18'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T16:17:37.120'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-10832'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:70228'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:70229'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:70230'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:70277'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-10832'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2484703'
    label: secalert@redhat.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-10832.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-10832'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-10832'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00417
epssPercentile: 0.33223
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-18T15:33:47.249004Z'
ingestedAt: '2026-09-18T14:43:13.070Z'
patched:
  - jboss_eap_8_1_for_rhel 10
  - jboss_eap_8_1_for_rhel 8
  - jboss_eap_8_1_for_rhel 9
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Cryostat 4, Red Hat build of Apache Camel - HawtIO 4, Red Hat build of Apache Camel 4 for Quarkus 3, Red Hat build of Debezium 3, Red Hat Build of Keycloak, Red Hat build of Quarkus, … · no fix planned: Cryostat 4, Red Hat build of Apache Camel - HawtIO 4, Red Hat build of Apache Camel 4 for Quarkus 3, Red Hat build of Debezium 3, … · updated 2026-09-22 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-10832.json)
- **RHSA-2026:70230** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 10 · released 2026-09-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:70230)
- **RHSA-2026:70228** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 8 · released 2026-09-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:70228)
- **RHSA-2026:70229** · Red Hat · fixed in: Red Hat JBoss EAP 8.1 for RHEL 9 · released 2026-09-22 · [advisory](https://access.redhat.com/errata/RHSA-2026:70229)