---
id: CVE-2026-73236
title: "Incorrect Authorization vulnerability in Apache Syncope.\n\n\n\nDelegated administration security checks are based on Realm hierarchy and enforced via prefix matches.\nDue to incorrect implementation, two sibling Realms whose names\_begin with…"
summary: "Incorrect Authorization vulnerability in Apache Syncope.\n\n\n\nDelegated administration security checks are based on Realm hierarchy and enforced via prefix matches.\nDue to incorrect implementation, two sibling Realms whose names\_begin with…"
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-863
vendor: Apache Software Foundation
product: Apache Syncope
affected:
  - apache_syncope >= 3.0.0-M0 <= 3.0.16
  - apache_syncope >= 4.0.0-M0 <= 4.0.7
  - apache_syncope >= 4.1.0-M0 <= 4.1.2
published: '2026-09-14'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T20:58:48.430'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73236'
references:
  - url: 'https://lists.apache.org/thread/5m8t357n2xt38ym5l2rrgbjyztd97yjv'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/09/14/7'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-14T19:31:24.987792Z'
ingestedAt: '2026-09-14T15:23:07.422Z'
epss: 0.00336
epssPercentile: 0.27058
---

## Overview

Incorrect Authorization vulnerability in Apache Syncope.



Delegated administration security checks are based on Realm hierarchy and enforced via prefix matches.
Due to incorrect implementation, two sibling Realms whose names begin with the same string cannot be correctly distinguished, resulting in incorrect authorization.





This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2.

Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.

## Remediation

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