Vulnerability · Published Aug 6, 2026 · Assigned by WSO2
CVE-2026-3415XML External Entity (XXE) Injection via Schema Validation in Multiple WSO2 Products Allows File Reading and Denial of Service
High 8.7
In plain English
A high-severity security flaw 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 0.5% (higher than 42% of all known vulnerabilities).
Official description
The XML and schema validation functionalities within the SchemaValidator Mediator process XML input as part of validation flows. Under certain conditions, the XML parser allows the resolution of external entities when handling user-supplied XML content during validation operations. This behavior can occur when an attacker supplies crafted XML payloads to the relevant mediator flows with sufficient privileges. Successful exploitation may allow a highly privileged actor to read files accessible within the server hosting the affected product. Additionally, it may be possible to trigger outbound requests to unintended internal or external locations, depending on the server environment and network configuration. Specially crafted XML payloads can also lead to excessive resource consumption during parsing, impacting the availability of the product.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| WSO2 | WSO2 API Manager | 3.2.0 – before 3.2.0.4723.2.1 – before 3.2.1.914.1.0 – before 4.1.0.2544.2.0 – before 4.2.0.1944.3.0 – before 4.3.0.1054.4.0 – before 4.4.0.684.5.0 – before 4.5.0.53 |
| WSO2 | WSO2 Universal Gateway | 4.5.0 – before 4.5.0.534.6.0 – before 4.6.0.16 |
| WSO2 | WSO2 Traffic Manager | 4.5.0 – before 4.5.0.524.6.0 – before 4.6.0.16 |
| WSO2 | WSO2 API Control Plane | 4.5.0 – before 4.5.0.544.6.0 – before 4.6.0.17 |
| WSO2 | WSO2 Carbon API Gateway | 6.7.206 – before 6.7.206.5946.7.210 – before 6.7.210.959.20.74 – before 9.20.74.3989.28.116 – before 9.28.116.4129.29.120 – before 9.29.120.2289.30.67 – before 9.30.67.1589.31.86 – before 9.31.86.1479.32.147 – before 9.32.147.38 |
| WSO2 | WSO2 Carbon API Management Implementation | 6.7.206 – before 6.7.206.5946.7.210 – before 6.7.210.959.20.74 – before 9.20.74.3989.28.116 – before 9.28.116.4129.29.120 – before 9.29.120.2289.30.67 – before 9.30.67.1589.31.86 – before 9.31.86.1479.32.147 – before 9.32.147.38 |
Weakness: CWE-776 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:H