WSO2 Carbon OAuth/Identity Server improper authorization

Summaryinfo

A vulnerability was found in WSO2 Carbon OAuth and Identity Server. It has been declared as critical. This affects an unknown part. Executing a manipulation can lead to improper authorization. This vulnerability is tracked as CVE-2025-0326. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in WSO2 Carbon OAuth and Identity Server (version now known) and classified as critical. This vulnerability affects some unknown processing. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The system fails to invalidate existing access tokens associated with sub-organization users during sensitive account management operations such as password reset, role change, or sub-organization disablement. This oversight allows previously issued tokens to remain active even after the user's access context has been modified or revoked through administrative actions. The identified issue could lead to unauthorized access by a malicious actor, but only when all of the following conditions are met: previously issued access tokens remain active, and these tokens have been exposed to malicious actors.

The advisory is available at security.docs.wso2.com. This vulnerability was named CVE-2025-0326 since 01/08/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/21/2026). This vulnerability is assigned to T1548.002 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• WSO2

Name

• Carbon OAuth
• Identity Server

License

• commercial

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