WSO2 API Control Plane Conditional Authentication improper authorization

Summaryinfo

A vulnerability was found in WSO2 API Control Plane, API Manager, Carbon Identity Application Authentication Framework, Identity Server, Identity Server as Key Manager, Open Banking AM, Open Banking IAM, Traffic Manager and Universal Gateway. It has been rated as critical. Affected by this issue is some unknown functionality of the component Conditional Authentication. The manipulation leads to improper authorization. This vulnerability is traded as CVE-2025-15039. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in WSO2 API Control Plane, API Manager, Carbon Identity Application Authentication Framework, Identity Server, Identity Server as Key Manager, Open Banking AM, Open Banking IAM, Traffic Manager and Universal Gateway and classified as critical. This issue affects an unknown function of the component Conditional Authentication. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The Conditional Authentication (Adaptive Authentication) script does not correctly enforce the completion of all required authentication steps when a specific multi-step pattern involving certain authenticators is configured. This allows an attacker to bypass intermediate authentication challenges by exploiting how the script handles callbacks and re-execution of authentication steps. Successful exploitation allows a malicious actor to gain unauthorized access to a targeted user account. This vulnerability can only be exploited when all of the following conditions are met: the application login flow contains a specific secondary authenticator, the Conditional Authentication script is configured with particular event callbacks and re-executes an authentication step, the targeted user has one of the impacted authenticators enrolled, and the attacker successfully completes any preceding authentication steps.

It is possible to read the advisory at security.docs.wso2.com. The identification of this vulnerability is CVE-2025-15039 since 12/23/2025. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/06/2026). The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

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

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Banking Software

Vendor

• WSO2

Name

• API Control Plane
• API Manager
• Carbon Identity Application Authentication Framework
• Identity Server
• Identity Server as Key Manager
• Open Banking AM
• Open Banking IAM
• Traffic Manager
• Universal Gateway

License

• commercial

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