Executive brief
WSO2 Identity Server is an authentication and identity management platform used to control user access and permissions across enterprise systems. When an administrator removes a user's internal roles, the system fails to invalidate previously issued authentication tokens, allowing the user to continue accessing restricted resources and performing actions they should no longer be authorized to perform until those tokens naturally expire.
Technical details
The vulnerability is an improper token revocation issue in WSO2 Identity Server's SOAP services. When internal roles are removed from a user account, the authentication tokens that were issued prior to role removal are not invalidated, remaining valid despite the underlying privilege change. An attacker with a user account could retain access to resources and operations even after an administrator revokes their roles, enabling unauthorized actions until the token's natural expiration. Patches are available via WSO2 Updates: Identity Server 5.11.0 requires update level 423, and Enterprise Integrator 6.6.0 requires update level 228. Configuration changes to deployment.toml are also recommended for Identity Server 5.11.0.
Affected products
- WSO2 Identity Server 5.11.0
- WSO2 Enterprise Integrator 6.6.0
Timeline
- 2026-05-03: disclosed