CVE-2026-62183 Apache Software Foundation CVE debrief

Who should care

Users of Apache Syncope, particularly those using versions 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.6, and 4.1.0-M0 through 4.1.1, should be aware of this vulnerability and take steps to mitigate it by upgrading to a fixed version, reviewing their configurations, and monitoring for potential exploitation attempts. This vulnerability has a significant impact on the security posture of affected systems, and prompt action is recommended.

Technical summary

The vulnerability exists in Apache Syncope when using the all-Java user workflow adapter or the Flowable user workflow adapter with a BPMN definition that does not require admin approval for user self-registration or self-update requests. A user can make a REST API call to grant themselves one or more defined roles, thereby gaining their entitlements and effectively becoming an administrator. The entitlements gained depend on the roles defined in the specific Syncope deployment. This issue can be mitigated by upgrading to a fixed version, reviewing and adjusting user workflow adapter configurations, and monitoring REST API calls for suspicious activity.

Defensive priority

High priority should be given to mitigating this vulnerability, as it allows for potential elevation of privileges and could have a significant impact on the security of affected systems. Immediate action is recommended to protect against potential exploitation attempts. Compensating controls, such as monitoring and restricting access to sensitive areas of the system, should be considered while a fix is being implemented. Additionally, reviewing and adjusting user workflow adapter configurations can help prevent exploitation. Implementing additional security measures, such as multi-factor authentication and role-based access control, can also help mitigate the risk associated with this vulnerability. Regularly reviewing system logs and monitoring for suspicious activity can help detect potential exploitation attempts. It is also essential to ensure that all users are aware of the vulnerability and the necessary steps to take to protect against it. By taking a proactive and multi-faceted approach, defenders can reduce the risk associated with this vulnerability and protect their systems from potential exploitation. Furthermore, defenders should verify the integrity of their systems and ensure that all necessary security patches are applied. They should also consider conducting regular security audits to identify and address any potential vulnerabilities. By prioritizing the mitigation of this vulnerability and taking a comprehensive approach to security, defenders can help protect their systems from potential exploitation and reduce the risk of a security breach. Finally, defenders should stay informed about the latest developments related to this vulnerability and be prepared to take additional steps as necessary to protect their systems. This may involve monitoring security advisories and alerts from Apache and other relevant sources, as well as participating in information-sharing activities with other defenders and security professionals. By staying informed and proactive, defenders can help ensure the security and integrity of their systems and protect against potential exploitation attempts. The CVE record and NVD entry provide additional information that,

Recommended defensive actions

• Upgrade to Apache Syncope version 4.0.7 or 4.1.2
• Review and adjust user workflow adapter configurations
• Monitor REST API calls for suspicious activity
• Implement compensating controls to limit role escalation
• Perform regular security audits to identify and address potential vulnerabilities
• Verify the integrity of systems and ensure all necessary security patches are applied
• Track and review system logs for signs of exploitation attempts

Evidence notes

The CVE record was published on 2026-07-20T15:16:44.860Z and was last modified on 2026-07-21T16:17:19.457Z. The NVD entry is currently Undergoing Analysis. References include Apache security lists and Openwall OSS Security lists. There may be additional information available from these sources that can help defenders understand and mitigate this vulnerability.

Official resources