Apache Syncope Privilege Escalation via User Workflow 3.x-4.1.x
CVE-2026-62183 Published on July 20, 2026
Apache Syncope: User self-service privilege escalation
Improper Privilege Management vulnerability in Apache Syncope.
When:
* the all-Java user workflow adapter is configured, or
* the Flowable user workflow adapter is configured, bearing a BPMN definition not requiring admin approval for user self registration of self update requests
the following scenario could happen.
A REST API call can allow the user to grant themselves one or more of defined Roles, thus gaining their Entitlements and becoming in fact an administrator; the actual Entitlements gained depend on the Roles that are effectively defined on the specific Syncope deployment.
This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.6, from 4.1.0-M0 through 4.1.1.
Users are recommended to upgrade to version 4.0.7 / 4.1.2, which fix this issue.
Vulnerability Analysis
CVE-2026-62183 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be critical as this vulnerability has a high impact to the confidentiality, integrity and availability of this component.
Weakness Type
Improper Privilege Management
The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Products Associated with CVE-2026-62183
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Affected Versions
Apache Software Foundation Apache Syncope:- Version 3.0.0-M0, <= 3.0.16 is affected.
- Version 4.0.0-M0, <= 4.0.6 is affected.
- Version 4.1.0-M0, <= 4.1.1 is affected.