---
id: CVE-2026-102495
title: >-
  Apache XmlSchema doesn't limit how deeply schema imports and includes can be
  nested, so a malicious schema can make parsing recurse until the stack
  overflows
summary: >-
  Apache XmlSchema doesn't limit how deeply schema imports and includes can be
  nested, so a malicious schema can make parsing recurse until the stack
  overflows. This causes a denial of service.

  Users are recommended to upgrade to version 2…
severity: none
vendor: Apache Software Foundation
product: 'org.apache.ws.xmlschema:xmlschema-core'
affected:
  - 'org.apache.ws.xmlschema:xmlschema-core < 2.3.3'
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T13:17:50.630'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-102495'
references:
  - url: 'https://lists.apache.org/thread/l339q3oldm0cd2lph4b6f93fd07x9g6s'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/09/29/15'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-29T12:33:37.291Z'
---

## Overview

Apache XmlSchema doesn't limit how deeply schema imports and includes can be nested, so a malicious schema can make parsing recurse until the stack overflows. This causes a denial of service.
Users are recommended to upgrade to version 2.3.3, which fixes this issue.

## Remediation

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