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Change History

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.

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CWE-74

https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4410/