Vulnerability · Published May 11, 2026 · Assigned by WSO2
CVE-2025-8154HTTP Header Injection via Webhook API in Multiple WSO2 Products Allows Response Header Manipulation
Medium 5.3
In plain English
A medium-severity injection in WSO2 API Control Plane from WSO2. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WSO2 | WSO2 API Manager | 4.1.0 – before 4.1.0.2184.2.0 – before 4.2.0.1644.3.0 – before 4.3.0.744.4.0 – before 4.4.0.384.5.0 – before 4.5.0.20 |
| WSO2 | WSO2 Universal Gateway | 4.5.0 – before 4.5.0.19 |
| WSO2 | WSO2 Traffic Manager | 4.5.0 – before 4.5.0.19 |
| WSO2 | WSO2 API Control Plane | 4.5.0 – before 4.5.0.21 |
| WSO2 | WSO2 Carbon API Gateway | 9.20.74 – before 9.20.74.3749.28.116 – before 9.28.116.3639.29.120 – before 9.29.120.1819.30.67 – before 9.30.67.1049.31.86 – before 9.31.86.64 |
| WSO2 | WSO2 Carbon API Management Implementation | 9.20.74 – before 9.20.74.3749.28.116 – before 9.28.116.3639.29.120 – before 9.29.120.1819.30.67 – before 9.30.67.1049.31.86 – before 9.31.86.64 |
Weakness: CWE-74 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N