What’s Vulnerable › Vulnerabilities
CVE-2025-8154: HTTP Header Injection via Webhook API in Multiple WSO2 Products Allows Response Header Manipulation
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-05-11 · updated 2026-10-14
- Weakness: CWE-74
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
- WSO2 Api Control Plane: from 4.5.0 before 4.5.0.21 — fixed in 4.5.0.21
- WSO2 API Manager: from 4.1.0 before 4.1.0.218; from 4.2.0 before 4.2.0.164; from 4.3.0 before 4.3.0.74; from 4.4.0 before 4.4.0.38; from 4.5.0 before 4.5.0.20 — fixed in 4.1.0.218, 4.2.0.164, 4.3.0.74, 4.4.0.38, 4.5.0.20
- WSO2 Traffic Manager: from 4.5.0 before 4.5.0.19 — fixed in 4.5.0.19
- WSO2 Universal Gateway: from 4.5.0 before 4.5.0.19 — fixed in 4.5.0.19
How to fix
Upgrade to a fixed version: WSO2 Api Control Plane 4.5.0.21; WSO2 API Manager 4.1.0.218, 4.2.0.164, 4.3.0.74, 4.4.0.38; WSO2 Traffic Manager 4.5.0.19; WSO2 Universal Gateway 4.5.0.19. Check the vendor advisory for mitigations.
References
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