WSO2 API Manager Webhook API injection

Summaryinfo

A vulnerability, which was classified as critical, has been found in WSO2 API Manager, Universal Gateway, Traffic Manager, API Control Plane, Carbon API Gateway and Carbon API Management Implementation. This affects an unknown function of the component Webhook API. Performing a manipulation results in injection. This vulnerability is identified as CVE-2025-8154. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in WSO2 API Manager, Universal Gateway, Traffic Manager, API Control Plane, Carbon API Gateway and Carbon API Management Implementation. This affects an unknown functionality of the component Webhook API. The manipulation with an unknown input leads to a injection vulnerability. CWE is classifying the issue as CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In Webhook API invocations, the component accepts user-supplied input for HTTP request headers without sufficient validation or sanitization, allowing these headers to be injected into HTTP responses. By exploiting this vulnerability, a malicious actor can inject or overwrite arbitrary HTTP response headers. This can lead to various adverse effects, including the manipulation of browser caching, alteration of security-related headers, and the injection of sensitive information such as cookie values, potentially enabling session hijacking or other malicious activities.

The advisory is shared at security.docs.wso2.com. This vulnerability is uniquely identified as CVE-2025-8154 since 07/25/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1055 for this issue.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-209758). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Automation Software

Vendor

• WSO2

Name

• API Control Plane
• API Manager
• Carbon API Gateway
• Carbon API Management Implementation
• Traffic Manager
• Universal Gateway

License

• commercial

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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