CVE-2026-62183: 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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Apache Syncopeto a version that resolves this vulnerability.Fixed in 4.0.7 - Upgrade
Upgrade
Apache Syncopeto a version that resolves this vulnerability.Fixed in 4.1.2 - Compensating control
If upgrading is not immediately possible, review Syncope user self-service workflow adapter configuration(s) (Flowable user workflow adapter and all-Java user workflow adapter) to prevent REST/API-driven self-assignment of Roles that grant Entitlements (including those that effectively provide administrator privileges).
Event History
Frequently Asked Questions
What is the severity of CVE-2026-62183?
CVE-2026-62183 has been assigned a risk score of 30, indicating a significant security impact.
How does CVE-2026-62183 affect Apache Syncope?
CVE-2026-62183 allows for user self-service privilege escalation due to improper privilege management in Apache Syncope.
How do I fix CVE-2026-62183?
To mitigate CVE-2026-62183, ensure that user workflow adapters are properly configured to require admin approval for self-registration and self-update requests.
Who is affected by CVE-2026-62183?
Organizations using Apache Syncope with the all-Java or Flowable user workflow adapters may be affected by CVE-2026-62183.
What are the recommended best practices to prevent CVE-2026-62183?
Implement strict access control and regularly review user workflow configurations to prevent privilege escalation as outlined in CVE-2026-62183.