CVE-2026-3415: WSO2 API Control Plane

High severity, CVSS 8.7. EPSS: 0.5% chance of exploitation in the next 30 days.

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

WSO2 WSO2 API Control Plane: from 4.5.0, before 4.5.0.54 (fixed in 4.5.0.54); from 4.6.0, before 4.6.0.17 (fixed in 4.6.0.17)
WSO2 WSO2 API Manager: from 3.2.0, before 3.2.0.472 (fixed in 3.2.0.472); from 3.2.1, before 3.2.1.91 (fixed in 3.2.1.91); from 4.1.0, before 4.1.0.254 (fixed in 4.1.0.254); from 4.2.0, before 4.2.0.194 (fixed in 4.2.0.194); from 4.3.0, before 4.3.0.105 (fixed in 4.3.0.105); from 4.4.0, before 4.4.0.68 (fixed in 4.4.0.68); …
WSO2 WSO2 Carbon API Gateway: from 6.7.206, before 6.7.206.594 (fixed in 6.7.206.594); from 6.7.210, before 6.7.210.95 (fixed in 6.7.210.95); from 9.20.74, before 9.20.74.398 (fixed in 9.20.74.398); from 9.28.116, before 9.28.116.412 (fixed in 9.28.116.412); from 9.29.120, before 9.29.120.228 (fixed in 9.29.120.228); from 9.30.67, before 9.30.67.158 (fixed in 9.30.67.158); …
WSO2 WSO2 Carbon API Management Implementation: from 6.7.206, before 6.7.206.594 (fixed in 6.7.206.594); from 6.7.210, before 6.7.210.95 (fixed in 6.7.210.95); from 9.20.74, before 9.20.74.398 (fixed in 9.20.74.398); from 9.28.116, before 9.28.116.412 (fixed in 9.28.116.412); from 9.29.120, before 9.29.120.228 (fixed in 9.29.120.228); from 9.30.67, before 9.30.67.158 (fixed in 9.30.67.158); …
WSO2 WSO2 Traffic Manager: from 4.5.0, before 4.5.0.52 (fixed in 4.5.0.52); from 4.6.0, before 4.6.0.16 (fixed in 4.6.0.16)
WSO2 WSO2 Universal Gateway: from 4.5.0, before 4.5.0.53 (fixed in 4.5.0.53); from 4.6.0, before 4.6.0.16 (fixed in 4.6.0.16)

Published 2026-08-06. Last modified 2026-08-31.